Fix Siddhi sending events to wrong stream when stopped and started.

[suhothayan]

Purpose

At times editor sends events to a wrong stream when worked with multiple event streams.

[codecov-io]

Codecov Report

Merging #1585 into master will increase coverage by 0.04%.
The diff coverage is 82.6%.

@@             Coverage Diff              @@
##             master    #1585      +/-   ##
============================================
+ Coverage     67.68%   67.73%   +0.04%     
  Complexity       45       45              
============================================
  Files           650      650              
  Lines         27471    27478       +7     
  Branches       4330     4330              
============================================
+ Hits          18595    18611      +16     
+ Misses         7063     7057       -6     
+ Partials       1813     1810       -3

Impacted Files	Coverage Δ	Complexity Δ
...java/io/siddhi/core/stream/input/InputManager.java	94.11% <100%> (+0.17%)	0 <0> (ø)	⬇️
.../io/siddhi/core/stream/input/InputDistributor.java	85.71% <100%> (+2.38%)	0 <0> (ø)	⬇️
...ore/query/processor/stream/LogStreamProcessor.java	65.17% <80%> (+1.28%)	0 <0> (ø)	⬇️
...o/siddhi/core/aggregation/IncrementalExecutor.java	81.25% <0%> (+0.78%)	0% <0%> (ø)	⬇️
...java/io/siddhi/core/stream/input/InputHandler.java	75% <0%> (+5.55%)	0% <0%> (ø)	⬇️
.../siddhi/core/util/event/handler/StreamHandler.java	74% <0%> (+12%)	0% <0%> (ø)	⬇️

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