Remove unnecessary escape characters in markdown output

[jonnyandrew]

Problem

Markdown formatted output (used for the plain text body part of a Matrix message) contains unnecessary escape characters.

For example, the message Hello, world! is output as Hello\, world\!.

See #799 for more details.

Solution

Do not escape special characters in markdown output as there is no requirement for valid/machine readable markdown in plain text Matrix messages.

• Fixes Markdown output contains unnecessary escape characters #799

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +1.60% 🎉

Comparison is base (2f1c7cc) 88.34% compared to head (71603ce) 89.94%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #800      +/-   ##
============================================
+ Coverage     88.34%   89.94%   +1.60%     
============================================
  Files           154       82      -72     
  Lines         17856    14693    -3163     
  Branches        862        0     -862     
============================================
- Hits          15775    13216    -2559     
+ Misses         1850     1477     -373     
+ Partials        231        0     -231     

Flag	Coverage Δ
uitests	?
uitests-android	?
uitests-ios	?
unittests	89.94% <100.00%> (+2.87%)	⬆️
unittests-android	?
unittests-ios	?
unittests-rust	89.94% <100.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
crates/wysiwyg/src/dom/to_markdown.rs	73.07% <ø> (ø)
crates/wysiwyg/src/dom/nodes/container_node.rs	95.36% <100.00%> (-0.01%)	⬇️
crates/wysiwyg/src/dom/nodes/text_node.rs	94.02% <100.00%> (-0.30%)	⬇️

... and 72 files with indirect coverage changes

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