Ensure asset and page titles are correctly shown in ckeditor

[mollux]

Q	A
Bug fix? (use the a.b branch)	[x]
New feature/enhancement? (use the a.x branch)	[ ]
Deprecations?	[ ]
BC breaks? (use the c.x branch)	[ ]
Automated tests included?	[ ]
Related user documentation PR URL	mautic/mautic-documentation#...
Related developer documentation PR URL	mautic/developer-documentation#...
Issue(s) addressed	Fixes #13676

Description:

Fixes #13676

sidenote
This whole logic looks weird for multiple reasons, and should be reworked in M6 to remove a lot of unneeded code and logic:

• the a: prefix is unused, it's just stripped without taking it into account
• the links are added in the token dropdown, but IMO there should be a diffet one
• there is no context besides the title what the reference link is, it can be both a page and an asset

Steps to test this PR:

see #13676

1. Open this PR on Gitpod or pull down for testing locally (see docs on testing PRs here)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.30%. Comparing base (f86c50e) to head (9d49b6c).
Report is 21 commits behind head on 5.x.

❗ Current head 9d49b6c differs from pull request most recent head 33fb993

Please upload reports for the commit 33fb993 to get more accurate results.

Additional details and impacted files

@@             Coverage Diff              @@
##                5.x   #13678      +/-   ##
============================================
- Coverage     61.50%   61.30%   -0.21%     
+ Complexity    34067    34005      -62     
============================================
  Files          2241     2238       -3     
  Lines        101850   101650     -200     
============================================
- Hits          62647    62315     -332     
- Misses        39203    39335     +132     

see 50 files with indirect coverage changes

[Esthertests]

nice work

titles are no longer truncated with the column

[oltmanns-leuchtfeuer]

Works as described, fixes the bug. Thanks :)