Angular: 20.3.8 Release

common

| Commit | Description | | -- | -- | | | Blocks IPv6 localhost from preconnect checks |

core

| Commit | Description | | -- | -- | | | Clear lView from IcuIteratorState when stack is empty to prevent memory leak |

migrations

| Commit | Description | | -- | -- | | | Do not remove a template if it is referenced even with a trailing semilocon |

router

| Commit | Description | | -- | -- | | | handle parenthesized outlets without a name in DefaultUrlSerializer (#64507) |