Updated changelog and package version for Netcode in anticipation of … …v1.15.0 release

docs: [BACKPORT] Small follow up docs fixes (#3754) docs: Small follow up docs fixes (#3754) Small follow up docs fixes Co-authored-by: Amy Reeve <[email protected]>

[BACKPORT] chore: Optimize NetworkBehaviour.NetworkManager property (#……3720) chore: Optimize NetworkBehaviour.NetworkManager property (#3700) * chore: Optimize NetworkBehaviour.NetworkManager property * ensure internal state is completely reset on behaviour despawn * Fix tests * Ensure NetworkManagerOwner is always correctly set * Update tests to explicitly set NetworkManagerOwner * Fix InstantiateAndSpawn * fixes * Hide error for now * Put error back and fix timetravel * try things * Fix onStartSweep * put back changed test code * Remove unneeded changes * Simplify changes * Put back needed change * Set NetworkManager in InstantiateAnd Spawn * Check for IsSpawned on despawn * Add recreating test * Clean up test helpers some * Fix the DistributedAuthorityCodecTests --------- Co-authored-by: Emma <[email protected]> Co-authored-by: Unity Netcode CI <[email protected]>

Updated changelog and package version for Netcode in anticipation of … …v2.5.1 release

regenerated jobs 

Preparing Netcode package of version 2.5.0 for the release 

style Removing using directive not being used,

docs: Docs fixes for 2.4.4 release (#3536) This PR includes the following: - Various link fixes identified on another pass - Reinstating the sample docs until we can find a better home for them (and moving them under their own samples folder) It _does not_ include a fix for the broken external code links. These aren't supported by the package docs tooling, and we need to discuss how we're going to get around the issue before we merge/release the docs. ## Changelog - Fixed: Various small issues with documentation. ## Testing and Documentation - No tests have been added. - Includes edits to existing public manual documentation. ## Backport #3535

docs: Applying docs fixes for patch release (#3535) This PR includes the following: - Various link fixes identified on another pass - Reinstating the sample docs until we can find a better home for them (and moving them under their own samples folder) It _does not_ include a fix for the broken external code links. These aren't supported by the package docs tooling, and we need to discuss how we're going to get around the issue before we merge/release the docs. ## Changelog - Fixed: Various small issues with documentation. ## Testing and Documentation - No tests have been added. - Includes edits to existing public manual documentation. ## Backport #3536

fix: remove observers from da host (#3526) Removing observers in disconnected client check. ## Changelog NA ## Testing and Documentation - No tests have been added. - No documentation changes or additions were necessary. <!-- Uncomment and mark items off with a * if this PR deprecates any API: ### Deprecated API - [ ] An `[Obsolete]` attribute was added along with a `(RemovedAfter yyyy-mm-dd)` entry. - [ ] An [api updater] was added. - [ ] Deprecation of the API is explained in the CHANGELOG. - [ ] The users can understand why this API was removed and what they should use instead. --> ## Backport <!-- If this is a backport: - Add the following to the PR title: "\[Backport\] ..." . - Link to the original PR. If this needs a backport - state this here If a backport is not needed please provide the reason why. If the "Backports" section is not present it will lead to a CI test failure. -->