refactor(icon-legacy): remove deprecated component

[akashsonune]

BREAKING CHANGE: Removed component SiIconLegacyComponent. Use SiIconComponent instead.

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Documentation.
Examples.
Dashboards Demo.
Playwright report.

Coverage Reports:

• charts-ng
• dashboards-ng
• element-ng
• element-translate-ng
• maps-ng
• native-charts-ng

[gemini-code-assist]

Code Review

This pull request removes the deprecated SiIconLegacyComponent along with its associated tests, templates, and migration test data. The reviewer noted that the corresponding symbol renaming rule in SYMBOL_RENAMING_MIGRATION should also be removed to prevent incorrect migrations that could break consumer builds.

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[gemini-code-assist]

Since SiIconLegacyComponent is being completely removed, the corresponding symbol renaming rule in SYMBOL_RENAMING_MIGRATION (which renames SiIconComponent to SiIconLegacyComponent) should also be removed. Leaving that rule active will cause valid SiIconComponent imports to be incorrectly migrated to the deleted legacy component, breaking consumer builds. Please clean up the obsolete symbol renaming rule in SYMBOL_RENAMING_MIGRATION as well.

[spliffone]

@spike-rabbit Can we potentially provide a schematic instead of blindly deleting the component?

[spike-rabbit]

I add all those PR to #2268. Then we can discuss there if we will add schematics. I guess for this one we can probably provide one.

[akashsonune]

I add all those PR to #2268. Then we can discuss there if we will add schematics. I guess for this one we can probably provide one.

Thanks, I will list my other PRs there.

[kfenner]

Moved to v52.0.0 because we also still use it in our own internal libs. We should first write the migration scripts and migrate our own components before we remove it in element.