fix: line break unhandled event (WPB-3320)

[github-actions]

Cherry pick from the original PR:

• fix: line break unhandled event (WPB-3320) #2043

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

When sending a message with 2 lines, the soft line break was not being handled and rendering first and second line together. example:

Causes (Optional)

SoftLineBreak was not being handled.

Solutions

Add handling of SoftLineBreak so it renders correctly (as in the image below)

Testing

How to Test

• Open App
• Open Conversation
• Receive a message like this:

message1
message2

message 3

• Should be handled as 3 correct lines and not only 2

Attachments (Optional)

[github-actions]

Test Results

519 tests  ±0   518 ✔️ ±0   23s ⏱️ ±0s
  75 suites ±0       1 💤 ±0 
  75 files   ±0       0 ❌ ±0 

Results for commit 02ed74b. ± Comparison against base commit 7503f6f.

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[AndroidBob]

Build 843 succeeded.

The build produced the following APK's:

• com.wire.android-v4.4.0(7201890)(7201890)-staging-compat.apk