Remove AppChannelAllowInsecureTls flag

[DeepanshuA]

Description

Removes AppChannelAllowInsecurerTLS flag, as it needs to be removed in 1.13

Issue reference

Please reference the issue this PR will close: #7149

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Unit tests passing
• End-to-end tests passing
• Extended the documentation / Created issue in the https://github.com/dapr/docs/ repo: dapr/docs#[issue number]
• Specification has been updated / Created issue in the https://github.com/dapr/docs/ repo: dapr/docs#[issue number]
• Provided sample for the feature / Created issue in the https://github.com/dapr/docs/ repo: dapr/docs#[issue number]

[mukundansundar]

/ok-to-test

[dapr-bot]

Dapr E2E test

🔗 Link to Action run

Commit ref: 00aacda

✅ Build succeeded for linux/amd64

• Image tag: dapre2e5ee9aebfdbl
• Test image tag: dapre2e5ee9aebfdbl

✅ Infrastructure deployed

Cluster	Resource group name	Azure region
Linux	Dapr-E2E-dapre2e5ee9aebfdbl	westus3
Windows	Dapr-E2E-dapre2e5ee9aebfdbw	westus3
Linux/arm64	Dapr-E2E-dapre2e5ee9aebfdbla	eastus

✅ Build succeeded for windows/amd64

• Image tag: dapre2e5ee9aebfdbw
• Test image tag: dapre2e5ee9aebfdbw

✅ Tests succeeded on windows/amd64

• Image tag: dapre2e5ee9aebfdbw
• Test image tag: dapre2e5ee9aebfdbw

✅ Tests succeeded on linux/amd64

• Image tag: dapre2e5ee9aebfdbl
• Test image tag: dapre2e5ee9aebfdbl

[codecov]

Codecov Report

Attention: 20 lines in your changes are missing coverage. Please review.

Comparison is base (d7775f8) 64.59% compared to head (8657a19) 64.62%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
pkg/runtime/wfengine/workflow.go	65.90%	8 Missing and 7 partials ⚠️
pkg/grpc/manager/manager.go	0.00%	2 Missing ⚠️
pkg/runtime/wfengine/backend.go	80.00%	1 Missing and 1 partial ⚠️
pkg/runtime/channels/channels.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7292      +/-   ##
==========================================
+ Coverage   64.59%   64.62%   +0.02%     
==========================================
  Files         226      226              
  Lines       21191    21219      +28     
==========================================
+ Hits        13689    13712      +23     
- Misses       6324     6325       +1     
- Partials     1178     1182       +4     

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