Update angular monorepo to v21.2.16

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/compiler (source)	21.2.15 → 21.2.16
@angular/compiler-cli (source)	21.2.15 → 21.2.16

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Release Notes

angular/angular (@​angular/compiler)

v21.2.16

Compare Source

common

Commit	Type	Description
f6d8e642b0	fix	only strip a literal /index.html suffix from URLs

compiler

Commit	Type	Description
ae1c8a1f7a	fix	move projection attributes into constants

core

Commit	Type	Description
3fd6897a67	fix	harden inherit definition feature against polluted prototypes
7e38336dc7	fix	use Object.create(null) for LOCALE_DATA as a hardening measure

platform-server

Commit	Type	Description
66821c4ed5	fix	throw on suspicious URLs and restrict protocol-relative URLs
d3170031b6	fix	update domino to latest version

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