fix(pivotGrid): Fix error thrown opening date pivot dimension filter.

[skrustev]

Closes #17478

Description

Issue was cause due to conflicting Angular collections when triggering detect change while another happens.

Type of Change (check all that apply):

• Bug fix
• New functionality
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (no functional changes)
• Documentation
• Demos
• CI/CD
• Tests
• Changelog
• Skills/Agents

Component(s) / Area(s) Affected:

Pivot grid

How Has This Been Tested?

• Unit tests
• Manual testing
• Automated e2e tests

Test Configuration:

• Angular version:
• Browser(s):
• OS:

Screenshots / Recordings

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code (test guidelines)
• This PR includes API docs for newly added methods/properties (api docs guidelines)
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes (migrations guidelines)
• This PR includes behavioral changes and the feature specification has been updated with them
• Accessibility (ARIA, keyboard navigation, focus management) has been verified

[Copilot]

Pull request overview

Fixes an error in the Pivot Grid when opening a date pivot dimension filter by deferring column regeneration triggered by i18n resource changes, avoiding conflicting Angular change detection/collection updates.

Changes:

• Defer setupColumns() execution in the i18n onResourceChange handler via a microtask (Promise.resolve().then(...)).

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

Suppressed comments (1)

projects/igniteui-angular/grids/pivot-grid/src/pivot-grid.spec.ts:846

• getI18nManager is no longer used in this spec after removing the listener workaround, but the import remains. This leaves an unused import (and can fail lint/TS checks with no-unused-vars/noUnusedLocals). Remove the getI18nManager import from the top of the file.

                const pivotGrid = fixture.componentInstance.pivotGrid;
                expect(pivotGrid.filterStrategy).toBeInstanceOf(DimensionValuesFilteringStrategy);

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

Suppressed comments (1)

projects/igniteui-angular/grids/pivot-grid/src/pivot-grid.component.ts:1003

• The setupColumns() call is now deferred via Promise.resolve().then(...), but that microtask isn’t tied to destroy$. If the grid gets destroyed after the i18n onResourceChange callback runs (but before the microtask executes), this can invoke setupColumns() on a destroyed component and throw (the base grid sets _destroyed = true in ngOnDestroy). Guard the microtask with _destroyed (or an equivalent destroy check).

                Promise.resolve().then(() => {
                    this.setupColumns();
                });