Exit the application after service panics

[dilanSachi]

Purpose

Fixes ballerina-platform/ballerina-library#3604
Fixes ballerina-platform/ballerina-library#4047

Cannot add tests for this scenario since System.exit will exit the complete test suite.

Examples

Checklist

• Linked to an issue
• Updated the changelog
• Added tests
• Updated the spec
• Checked native-image compatibility

[codecov]

Codecov Report

Base: 80.50% // Head: 71.96% // Decreases project coverage by -8.54% ⚠️

Coverage data is based on head (c8af65c) compared to base (b702fad).
Patch coverage: 58.62% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1158      +/-   ##
==========================================
- Coverage   80.50%   71.96%   -8.54%     
==========================================
  Files          75       76       +1     
  Lines        5344     5379      +35     
  Branches     1233     1245      +12     
==========================================
- Hits         4302     3871     -431     
- Misses        629     1092     +463     
- Partials      413      416       +3     

Impacted Files	Coverage Δ
...n/java/io/ballerina/stdlib/grpc/GrpcConstants.java	100.00% <ø> (ø)
ballerina/auth_desugar.bal	50.00% <20.00%> (-42.46%)	⬇️
...b/grpc/callback/StreamingCallableUnitCallBack.java	78.94% <66.66%> (-4.19%)	⬇️
...tdlib/grpc/callback/UnaryCallableUnitCallBack.java	77.00% <66.66%> (-3.69%)	⬇️
ballerina/caller.bal	0.00% <0.00%> (-100.00%)	⬇️
ballerina/compression.bal	0.00% <0.00%> (-100.00%)	⬇️
ballerina/grpc_commons.bal	0.00% <0.00%> (-100.00%)	⬇️
ballerina/auth_listener_jwt_auth_handler.bal	0.00% <0.00%> (-100.00%)	⬇️
ballerina/service_endpoint.bal	0.00% <0.00%> (-96.63%)	⬇️
ballerina/streaming_client.bal	0.00% <0.00%> (-95.84%)	⬇️
... and 19 more

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[daneshk]

Add minor comment. Overall LGTM