Issue #3131348: Replace assertions involving calls to empty() with assertEmpty()/assertNotEmpty()/assertArrayNotHasKey()

Issue #2975461 by quietone, Matroskeen, Lendude: Convert query string to array for d6 menu_link migration

(cherry picked from commit 55a804ce)

(cherry picked from commit 84ef68cf)

Issue #3231683 by daffie, longwave: [Symfony 6] A number of methods of the class Drupal\Core\TypedData\Validation\ExecutionContext are considered internal and Drupal should not override them

(cherry picked from commit b4a6273e)

Issue #3214921 by daffie, xurizaemon, alexpott, mondrake, andypost, Taran2L, Mixologic, longwave: Add a requirements warning in Drupal 9 when PostgreSQL is used and the pg_trgm extension is not created

(cherry picked from commit 84e8b971)

(cherry picked from commit ea01173e)

(cherry picked from commit 9f6cef72)

Issue #3212891 by vaish, brentgees@gmail.com, srilakshmier, mikelutz, quietone, alexpott: Incorrect type declaration in docblock for class property

(cherry picked from commit 2aee2c17)

Ben Mullins authored 3 years ago and Lee Rowlands committed 3 years ago

Issue #3239509 by hooroomoo, larowlan, bnjmnm, lauriii: Add String.includes polyfill to support IE11 and Opera Mini

(cherry picked from commit 0949c10c)

Issue #3087332 by quietone, huzooka, amateescu, danflanagan8: Deprecate the 'd6_url_alias_language' migration process plugin

(cherry picked from commit 04f25785)

Issue #3163663 by mpp, chrisolof, alexpott, quietone: Too many open files issue with migrating multiple files using "download" process plugin

(cherry picked from commit 76b86646)

(cherry picked from commit 055054d5)

(cherry picked from commit 10ca9797)

Issue #3213644 by Beakerboy, daffie: StatementWrapperLegacyTest::testClientStatementMethod() should be less specific

(cherry picked from commit 8512e0e9)

Issue #2569381 by alx_benjamin, init90, vasi, deepakaryan1988, Munavijayalakshmi, Lendude, DuaelFr, alexpott, dawehner: Drupal\views\Plugin\views\area\Result does an unnecessary XSS::adminFilter()

(cherry picked from commit f5fdfe31)

(cherry picked from commit b3a30bae)

(cherry picked from commit a9113534)

Issue #3214170 by Sakthivel M, manojithape, mitthukumawat, tushar_sachdeva: Claro:The cancel button is not center-aligned in the layout builder

(cherry picked from commit f4ff1b59)

Issue #3186992 by hinal05, djsagar, kiran.kadam911, hitvika_verma, tushar_sachdeva, chetanbharambe, ranjith_kumar_k_u, bnjmnm, BhumikaVarshney, Sakthivel M, Abhijith S, babusaheb.vikas, lauriii: Nav menu items can overflow outside of container

(cherry picked from commit 4063e76c)