[APP-538] feat: canvas default filter support

[briangregoryholmes]

This PR adds support for specifying default time, dimension and measure filters when loading a Canvas dashboard for the first time. When using the builder surface in Rill Developer, the workspace provides a quick way to save the currently selected filters as default, which propagate to the YAML as metrics SQL statements:

type: canvas
defaults:
  time_range: 6h as of latest/m+1m
  filters:
    AdBids_metrics: (publisher IN ('Facebook', 'Google')) AND (publisher IN (SELECT publisher
      FROM metrics_view HAVING total_records > 200))

To support the use of multiple metrics views across a single canvas, these metrics SQL filters are keyed with the name of the underlying metrics view.

• Filters are handled on a per-metrics-view basis via instances of the new FilterState class
• Filter consolidation and rendering across multiple FilterState classes happens through the new FilterManager
• URL filters are keyed with a string that takes the form f.{{metrics_view_name}}
• Each FilterState class has actions on it that allow for filter state manipulation
• The FilterManager class has proxies for these functions to call them across multiple FilterState classes
• Consolidation of the namespace across multiple metrics views currently assumes that all dimensions/measures with equivalent identifiers are the same
• Canvas initialization now happens through the CanvasProvider component no matter where a Canvas is rendered
• When adding a filter for a measure/dimension that exists across multiple metrics views, it is added to each FilterState class (and to the URL) independently, though the actual URL navigation is batched for each user action
• Canvas loading, url param syncing and redirecting happens through the onUrlChange function as well as updated getters and setters in canvas/state-managers.ts
• Removes use of RuntimeProvider for embeds, sets the runtime in the topmost layout load function instead
• A new "save defaults" button is added to update the YAML defaults with the current filter state
• Refactors canvas time state management to use TimeManager and TimeState classes

Outstanding items:

• Update designs (and implementation) to reflect "pin" behavior rather than lock @Di7design
• Remove old Filter class if possible
• Ensure changes did not break Explore
• Ensure prior filter strings (without scoped metrics view) work as intended
• Fix tests
• Abstract UI filter parsing method and apply to defaults
• Fix issue with measure filter pills not updating on first apply
• Update CanvasFilterButton to display labels rather than unique ids
• Match sidebar design to Figma
• Add pinning capability to measures
• Resolve issue where unpinning does not immediately reflect in pill
• Add "saved as default" state to button when viewing defaults
• Resolve issue where filter dropdown reopens after applying selections
• Bring back measure-specific dimension lists

Checklist:

• Covered by tests
• Ran it and it works as intended
• Reviewed the diff before requesting a review
• Checked for unhandled edge cases
• Linked the issues it closes
• Checked if the docs need to be updated. If so, create a separate Linear DOCS issue
• Intend to cherry-pick into the release branch
• I'm proud of this work!

---

Note

Adds per-metrics-view canvas filtering with pinning and saved defaults, updates URL/schema and parser, refactors initialization/embeds, and introduces new UI to manage and display default/pinned filters.

• Canvas filtering overhaul:
  • Introduces per-metrics-view filtering via FilterManager and MetricsViewFilter with consolidated UI/state.
  • Adds default filters and pinning (save/clear defaults; pinned chips), new inspector tabs, and read-only chips.
  • Updates URL schema to scoped filters (f.{metrics_view}) and batching of navigation.
• Protocol & API:
  • Extends CanvasSpec with pinned_filters; CanvasPreset with filter_expr; updates Swagger/TS/Go protobufs.
  • Parser reads filters.pinned and defaults.filters from YAML.
• Runtime/initialization:
  • New handleCanvasStoreInitialization and onUrlChange; removes RuntimeProvider for embeds; sets runtime in layout.
• UI components:
  • New SaveDefaultsButton, default filters display; enhanced Chip (pin/gray), filter buttons/chips; time/comparison tweaks.
• Embeds/routes:
  • Canvas embed and app routes refactored to initialize/store canvas and sync URL.
• Cleanup & tests:
  • Removes old Filters class; updates bookmark handling and tests to new comparison/filters.

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[Di7design]

See Figma here.

[nishantmonu51]

@briangregoryholmes : Is this ready for review ? Still on track for the release next week?

[AdityaHegde]

This is a bit too large for a 100% review. Approving this as a 90% review.

[ericokuma]

UX looks good to me

@Di7design

[Di7design]

UX looks good to me

@Di7design

This branch is functional, but we might need further iteration.

[ericokuma]

Looks good @briangregoryholmes

[ericokuma]

Great job everyone!