Fixed the style attribute value normalization

The regular expression replace here was done only for the first match. I added the global flag to it.
Added pastefromword tags to related ticket tests.
Remove also duplicated leading semicolons.
Changelog entry.
Merge branch 't/12263'
Iterator should not skip block boundaries.
We must shrink range when at outer boundaries or not a path block boundary.
Code refactoring: Extracted repeating code to function.
Changelog entry.
Merge branch 't/12178'
Fixed issue with Magicline throwing an exception when DOMDocument.elementFromPoint returns empty object.
Code simplification. Removed test that can't validate the issue.
Changelog entry.
Merge branch 't/12185'
Tests: Added tests for voice label and editor title correlation.
Text inside .cke_voice_label comes from title config propety, and not added when value is set to false.
Fixed issue with multiple editor instances.