Improve the logic of GoAway frame handling in the client side

[dilanSachi]

Purpose

Fixes ballerina-platform/ballerina-library#4806

Examples

Checklist

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

[codecov]

Codecov Report

Attention: 49 lines in your changes are missing coverage. Please review.

Comparison is base (7ebf4ec) 81.68% compared to head (e48aca0) 81.59%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
...actimpl/sender/states/http2/SendingEntityBody.java	0.00%	8 Missing ⚠️
...tractimpl/sender/states/http2/SendingRstFrame.java	0.00%	7 Missing ⚠️
...ntractimpl/sender/states/http2/SendingHeaders.java	0.00%	6 Missing ⚠️
...tractimpl/sender/http2/Http2ConnectionManager.java	86.84%	1 Missing and 4 partials ⚠️
...ctimpl/sender/states/http2/EntityBodyReceived.java	0.00%	4 Missing ⚠️
...ractimpl/sender/states/http2/ReceivingHeaders.java	0.00%	4 Missing ⚠️
...mpl/sender/states/http2/WaitingFor100Continue.java	0.00%	4 Missing ⚠️
...in/java/io/ballerina/stdlib/http/api/HttpUtil.java	72.72%	0 Missing and 3 partials ⚠️
...rt/contractimpl/sender/http2/Http2ChannelPool.java	0.00%	3 Missing ⚠️
...ort/contractimpl/common/states/Http2StateUtil.java	50.00%	2 Missing ⚠️
... and 2 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1833      +/-   ##
============================================
- Coverage     81.68%   81.59%   -0.09%     
  Complexity      562      562              
============================================
  Files           393      393              
  Lines         21366    21489     +123     
  Branches       4786     4797      +11     
============================================
+ Hits          17452    17534      +82     
- Misses         2922     2954      +32     
- Partials        992     1001       +9     

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[sonarqubecloud]

Quality Gate passed

The SonarCloud Quality Gate passed, but some issues were introduced.

53 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[TharmiganK]

LGTM