Issue #3254553 by Leon Kessler, Berdir, Bladedu, cmlara: FileUrlGenerator::generate() does not work with externally hosted files using stream wrappers

Issue #3080666 by phenaproxima, Upchuk, ieguskiza, larowlan, ravi.shankar, nikitagupta, zipymonkey, Bladedu, pameeela, b_sharpe, seanB, Spokje, mukesh.dev, Gauravmahlawat: oEmbed system doesn't work if thumbnail url does not have a file extension

Revert "Issue #3080666 by phenaproxima, Upchuk, ieguskiza, ravi.shankar, nikitagupta, zipymonkey, larowlan, Bladedu, pameeela, Gauravmahlawat, Spokje, mukesh.dev, seanB: oEmbed system doesn't work if thumbnail url does not have a file extension"

This reverts commit 146249c8.

Adam G-H authored Jul 09, 2021 and Lee Rowlands committed Jul 09, 2021

Issue #3080666 by phenaproxima, Upchuk, ieguskiza, ravi.shankar, nikitagupta, zipymonkey, larowlan, Bladedu, pameeela, Gauravmahlawat, Spokje, mukesh.dev, seanB: oEmbed system doesn't work if thumbnail url does not have a file extension

Issue #2080391 by johnmcc, Bladedu, chertzog, jeroen12345: Remove Unused local variables from multiple core files.

Issue #2080401 by Bladedu, mrsinguyen, lokapujya, pfrenssen: Remove Unused local variable  from /core/modules/simpletest/lib/Drupal/simpletest/Tests/SimpleTestTest.php.

Issue #1034828 by Steven Jones, Bladedu, brunodbo: Fixed 'No active batch' error after user cancelling own account.