Angular: v21.2.16 Release

common

| Commit | Description | | -- | -- | | | only strip a literal /index.html suffix from URLs |

compiler

| Commit | Description | | -- | -- | | | move projection attributes into constants |

core

| Commit | Description | | -- | -- | | | harden inherit definition feature against polluted prototypes | | | use Object.create(null) for LOCALE_DATA as a hardening measure |

platform-server

| Commit | Description | | -- | -- | | | throw on suspicious URLs and restrict protocol-relative URLs | | | update domino to latest version |