Web Components Grids fixes

[damyanpetev]

Fix Grid templates in Web Components and add igc-ts templates checks

[coveralls]

coverage: 84.816% (+9.7%) from 75.112%
when pulling 7b0d992 on dpetev/webcomponents-grids-fixes
into f2e86d5 on master.

[Copilot]

Pull request overview

This PR updates Ignite UI CLI template specs to better validate Web Components template metadata/collisions, and modernizes/fixes several igc-ts grid templates (dependencies and usage patterns).

Changes:

• Add a new webcomponents-spec suite and extend template collision checks for igc-ts.
• Initialize App in multiple template spec suites and improve assertion contexts.
• Update Web Components igc-ts grid templates (default/editing/summaries) to use the newer grid APIs and adjust required npm packages.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
spec/templates/webcomponents-spec.ts	New spec coverage for Web Components templates (IDs + igc-ts collision checks).
spec/templates/react-spec.ts	Adds App.initialize() and improves collision assertion context.
spec/templates/jquery-spec.ts	Adds App.initialize() and improves assertion context for missing IDs.
spec/templates/angular-spec.ts	Adds App.initialize() and improves collision assertion context.
packages/cli/templates/webcomponents/igc-ts/grid/grid-summaries/index.ts	Adds grids package dependency for the summaries template.
packages/cli/templates/webcomponents/igc-ts/grid/grid-summaries/files/src/app/path/filePrefix.ts	Updates summaries sample to register/use IgcGridComponent + .data binding and switches theme css.
packages/cli/templates/webcomponents/igc-ts/grid/grid-editing/index.ts	Adds grids package dependency for the editing template.
packages/cli/templates/webcomponents/igc-ts/grid/grid-editing/files/src/app/path/filePrefix.ts	Reworks editing sample to igc-grid + transactions-based batch editing UI.
packages/cli/templates/webcomponents/igc-ts/grid/default/index.ts	Simplifies template package dependencies to just grids.
packages/cli/templates/webcomponents/igc-ts/grid/default/files/src/app/path/filePrefix.ts	Reworks default sample from data grid to igc-grid, adds grouping/filtering wiring and material theme import.
packages/cli/templates/webcomponents/igc-ts/grid/default/files/src/app/path/filePrefix.test.ts	Renames describe block to reflect IgcGridComponent.

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