refactor: remove leftover wrappers AngularTemplate and related tests

[damyanpetev]

Related to #1491

Additional information related to this pull request:

[coveralls]

coverage: 75.027% (-0.2%) from 75.25%
when pulling 4f5fb4b on dpetev/angular-wrappers-leftovers
into 8096fe0 on master.

[Copilot]

Pull request overview

This PR removes the deprecated AngularTemplate wrapper implementation and its associated unit tests, consolidating Angular template behavior around IgniteUIForAngularTemplate from @igniteui/angular-templates.

Changes:

• Deleted the legacy AngularTemplate class from the CLI package.
• Removed the AngularTemplate base unit test suite.
• Updated add command unit tests to stop referencing AngularTemplate and use IgniteUIForAngularTemplate instead.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
spec/unit/base-templates/AngularTemplate-spec.ts	Removes unit tests targeting the deleted legacy AngularTemplate wrapper.
spec/unit/add-spec.ts	Drops AngularTemplate usage in tests and switches a remaining instantiation to IgniteUIForAngularTemplate.
packages/cli/lib/templates/AngularTemplate.ts	Removes the legacy Angular wrapper template implementation from the CLI package.

Comments suppressed due to low confidence (1)

spec/unit/add-spec.ts:379

• This test calls addCmd.addTemplate(...), which returns a Promise, but the call isn’t awaited. Since the spec function is async, this can make the expectations run before addTemplate completes and can lead to flaky behavior (and potentially unhandled async failures). Await the call and consider asserting that registerInProject/processTemplates are not invoked when the module path is invalid, and that the returned value is false.

	it("Should not add component and should log error if wrong path is passed to module", async () => {
		spyOn(Util, "fileExists").and.returnValue(false);
		spyOn(Util, "error");
		const wrongPath = "myCustomModule/my-custom-module.module.ts";
		addCmd.addTemplate("test-file-name", new IgniteUIForAngularTemplate(__dirname), { modulePath: wrongPath });
		expect(Util.fileExists).toHaveBeenCalledTimes(1);
		expect(Util.error).toHaveBeenCalledTimes(1);
		expect(Util.error).toHaveBeenCalledWith(`Wrong module path provided: ${wrongPath}. No components were added!`);
	});

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