fix(tags): properly filter tags in picker by tag type discoverability

[whitdog47]

This PR updates the tag picker so that tags are only shown if their tag type is discoverable for the selected model.

• In fetchTags, the logic now fetches tag type IDs with discoverable_<model> = true and applies them in the API filter before loading tags.
• Client-side filtering in convertData has been removed, shifting all discoverability checks into the backend query.
• TagPicker.vue now supports props.project as either a single object or an array and normalizes it in relevant methods. (Fixes issue with case and incident table filters.)

[Copilot]

Pull Request Overview

This PR updates the tag-picker so that tags are only shown if their tag type is discoverable for the selected model.

• In fetchTags, the logic now fetches tag type IDs with discoverable_<model> = true and applies them in the API filter before loading tags.
• Client-side filtering in convertData has been removed, shifting all discoverability checks into the backend query.
• TagPicker.vue now supports props.project as either a single object or an array and normalizes it in relevant methods.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/dispatch/static/dispatch/src/tag/store.js	Add model-specific discoverability filter, rebuild TagApi parameters, and remove old client-side filtering in convertData.
src/dispatch/static/dispatch/src/tag/TagPicker.vue	Normalize props.project handling in validateTags, fetchData, and generateSuggestions.

Comments suppressed due to low confidence (2)

src/dispatch/static/dispatch/src/tag/TagPicker.vue:357

• [nitpick] The variable project_id uses snake_case but the rest of the code uses camelCase. Consider renaming to projectId for consistency with JavaScript naming conventions.

  const project_id = project?.id || 0

src/dispatch/static/dispatch/src/tag/store.js:332

• The previous implementation used the parameter name descending. Verify that sortDesc is recognized by TagApi.getAll, or switch to descending to match the existing API contract.

        sortDesc: [false],