Changes summary:

Fixed issues:
* [JENKINS-22722](https://issues.jenkins-ci.org/browse/JENKINS-22722) -
Make the channel reader tolerant against Socket timeouts.
(https://github.com/jenkinsci/remoting/pull/80)
* [JENKINS-32326](https://issues.jenkins-ci.org/browse/JENKINS-32326) -
Support no_proxy environment variable.
(https://github.com/jenkinsci/remoting/pull/84)
* [JENKINS-35190](https://issues.jenkins-ci.org/browse/JENKINS-35190)  -
Do not invoke PingFailureAnalyzer for agent=>master ping failures.
(https://github.com/jenkinsci/remoting/pull/85)
* [JENKINS-31256](https://issues.jenkins-ci.org/browse/JENKINS-31256) -
 <code>hudson.Remoting.Engine#waitForServerToBack</code> now uses credentials for connection.
(https://github.com/jenkinsci/remoting/pull/87)
* [JENKINS-35494](https://issues.jenkins-ci.org/browse/JENKINS-35494) -
Fix issues in file management in <code>hudson.remoting.Launcher</code> (main executable class).
(https://github.com/jenkinsci/remoting/pull/88)

Enhancements:
* Ensure a message is logged if remoting fails to override the default <code>ClassFilter</code>.
(https://github.com/jenkinsci/remoting/pull/80)
(cherry picked from commit c718516a)

(cherry picked from commit 7acfbec4)

follow-up for JENKINS-34751

(cherry picked from commit 96a78285)

(cherry picked from commit 9657629d)

[FIXED JENKINS-31915] Proxy settings in plugins page are ignored
(cherry picked from commit 81e00cc6)

See https://github.com/jenkinsci/windows-slave-installer-module/pull/3

(cherry picked from commit 57e98ad7c967da06c1beb63956a1724571387a9f)

[JENKINS-35206] - Make the InstallState object deserialization robust against corrupted files (#2387)

* [JENKINS-35206] - Add unit tests for the deserialization logic

* [JENKINS-35206] - Install state should be robust against messed statuses when deserializing objects

* [JENKINS-35206] - Fix the license header in thre test file

(cherry picked from commit 1b2711c9)

(cherry picked from commit 54164110)

* [JENKINS-35178] Fix close button in Safari

* [JENKINS-35178] Removed units

* [JENKINS-35178] Back to the original button design

(cherry picked from commit d35c7de7)

(cherry picked from commit 53f89740)

* [FIXED JENKINS-34881] - handle non-default security settings for new installs

* Ensure permissions

* Initial security authentication token should still follow redirects

(cherry picked from commit 723dfca3)

This reverts commit 673e8b5e.

* JENKINS-35198 Add failing test for clear identification of the issue and future regression test

* JENKINS-35198 Fix DelegatingComputerLauncher logic for filtering out subclasses as possible delegates

this logic is by default, and subclasses can still allow the selection of other DelegatingComputerLauncher instances as delegates.

Updated Polish translations

Fixes Jenkins build error

contains fixes for GROOVY-7761 and GROOVY-7826

[FIXES JENKINS-34751]

* [JENKINS-35020] Fixed some JSHint errors

* [JENKINS-35020] @kzantow's comment was addressed

* [JENKINS-35020] @kzantow's comment was addressed

[FIXED JENKINS-34883] the legacy default update site can be different from the one specified by ID_DEFAULT

* JENKINS-34708 - UpdateCenter.EnableJob not properly setting status

* Restore if (status instanceof Pending)

* [JENKINS-31417] CLI command connect-node extracted from core to CLI

connect-node extended to accept multiple node names
connect-node covered by test-cases

* Slighty modified Javadoc

* Fixed translations after rebase

* [JENKINS-34531] Extended CLI online-node for accepting multiple agents

Polished and extended related TC as well.

* Simplified string composition

* Simplified initialization of HashSet