docs: update CHANGELOG to drop a breaking change from 18.2.0 version (a…

…ngular#57419)

This commit updates the CHANGELOG to remove an entry about a breaking change in Zone.js, since the change was not actually released. It will be released separately in Zone.js package.

PR Close angular#57419

CHANGELOG.md

@@ -41,11 +41,6 @@
 
 <a name="18.2.0"></a>
 # 18.2.0 (2024-08-14)
-## Breaking Changes
-### zone.js
-- `fakeAsync` will now flush pending timers at the end of
-  the given function by default. To opt-out of this, you can use `{flush:
-  false}` in options parameter of `fakeAsync`
 ### compiler
 | Commit | Type | Description |
 | -- | -- | -- |
@@ -3891,4 +3886,4 @@ Adrian Kunz, Alan Agius, AleksanderBodurri, Alex Rickabaugh, AlirezaEbrahimkhani
 
 
 
-Earlier changelog entries can be found in CHANGELOG_ARCHIVE.md file.
+Earlier changelog entries can be found in CHANGELOG_ARCHIVE.md file.