chore: remove conversation id from send message viewmodel to make it reausable

[Garzas]

---

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

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What's new in this PR?

• removed conversation Id and savedStateHandle from SendMessageViewModel to make it reusable in ImportMediaScreen where user can select conversation to which he can send assets
• added conversationId do UIMessages

[github-actions]

Test Results

878 tests  ±0   878 ✅ ±0   8m 51s ⏱️ - 2m 24s
120 suites ±0     0 💤 ±0 
120 files   ±0     0 ❌ ±0 

Results for commit 0ca093c. ± Comparison against base commit 7d5208b.

♻️ This comment has been updated with latest results.

[alexandreferris]

nice

[codecov]

Codecov Report

Attention: Patch coverage is 82.81250% with 11 lines in your changes are missing coverage. Please review.

Project coverage is 43.78%. Comparing base (7d5208b) to head (0ca093c).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2834      +/-   ##
===========================================
+ Coverage    43.71%   43.78%   +0.06%     
===========================================
  Files          421      422       +1     
  Lines        14019    14034      +15     
  Branches      2537     2537              
===========================================
+ Hits          6129     6145      +16     
+ Misses        7171     7169       -2     
- Partials       719      720       +1     

Files	Coverage Δ
.../ui/home/conversations/MessageComposerViewState.kt	80.76% <100.00%> (+1.60%)	⬆️
.../wire/android/ui/home/conversations/MessageItem.kt	0.00% <ø> (ø)
...android/ui/home/conversations/SystemMessageItem.kt	0.00% <ø> (ø)
...e/android/ui/home/conversations/model/UIMessage.kt	52.45% <100.00%> (+0.29%)	⬆️
...in/kotlin/com/wire/android/mapper/MessageMapper.kt	61.00% <50.00%> (-0.23%)	⬇️
.../messagecomposer/state/MessageCompositionHolder.kt	38.84% <0.00%> (-6.09%)	⬇️
...i/home/messagecomposer/model/MessageComposition.kt	23.37% <0.00%> (-0.63%)	⬇️
...oid/ui/home/messagecomposer/model/MessageBundle.kt	87.50% <87.50%> (ø)
.../conversations/sendmessage/SendMessageViewModel.kt	83.11% <84.61%> (-0.65%)	⬇️

... and 2 files with indirect coverage changes

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[github-actions]

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

[AndroidBob]

Build 3821 succeeded.

The build produced the following APK's:

• com.wire.android-v4.7.0(9265492)(9265492)-staging-compat.apk