Fix | Fix SQLServerConnection.abort() API behavior to clear resources consistently

[cheenamalhotra]

As per Java Specifications, executing Connection.abort(Executor executor), must also release all resources and mark the connection closed as Connection.close() would.

The PR fixes the same by managing resource cleanup separately in a common internal method.

[codecov-io]

Codecov Report

Merging #983 into dev will decrease coverage by 0.01%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##                dev    #983      +/-   ##
===========================================
- Coverage     50.61%   50.6%   -0.02%     
+ Complexity     2921    2920       -1     
===========================================
  Files           120     120              
  Lines         27996   27995       -1     
  Branches       4681    4677       -4     
===========================================
- Hits          14170   14166       -4     
- Misses        11530   11535       +5     
+ Partials       2296    2294       -2

Flag	Coverage Δ	Complexity Δ
#JDBC42	50.11% <100%> (-0.04%)	2877 <6> (-1)
#JDBC43	50.5% <100%> (+0.01%)	2913 <6> (-3)	⬇️

Impacted Files	Coverage Δ	Complexity Δ
.../microsoft/sqlserver/jdbc/SQLServerConnection.java	46.48% <100%> (+0.05%)	343 <6> (+1)	⬆️
...a/com/microsoft/sqlserver/jdbc/PLPInputStream.java	58.57% <0%> (-1.19%)	33% <0%> (-1%)
...rc/main/java/com/microsoft/sqlserver/jdbc/DDC.java	46.86% <0%> (-0.44%)	111% <0%> (-1%)
...n/java/com/microsoft/sqlserver/jdbc/Parameter.java	67.13% <0%> (-0.21%)	64% <0%> (ø)
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	55.61% <0%> (-0.14%)	0% <0%> (ø)
...ncurrentlinkedhashmap/ConcurrentLinkedHashMap.java	39% <0%> (+0.43%)	43% <0%> (ø)	⬇️
...c/main/java/com/microsoft/sqlserver/jdbc/Util.java	62.5% <0%> (+0.43%)	91% <0%> (+1%)	⬆️

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