[ISSUE #6858] passing through ProxyContext for future expansion

[xdkxlk]

Which Issue(s) This PR Fixes

Fixes #6858

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Merging #6859 (40314b6) into develop (bee5077) will decrease coverage by 0.01%.
The diff coverage is 52.08%.

@@              Coverage Diff              @@
##             develop    #6859      +/-   ##
=============================================
- Coverage      42.65%   42.64%   -0.01%     
+ Complexity      9093     9086       -7     
=============================================
  Files           1121     1121              
  Lines          79775    79775              
  Branches       10409    10409              
=============================================
- Hits           34027    34024       -3     
- Misses         41462    41473      +11     
+ Partials        4286     4278       -8     

Impacted Files	Coverage Δ
...proxy/grpc/v2/consumer/ReceiveMessageActivity.java	73.41% <0.00%> (ø)
...tmq/proxy/processor/DefaultMessagingProcessor.java	2.89% <0.00%> (ø)
...rocketmq/proxy/processor/TransactionProcessor.java	60.00% <0.00%> (ø)
.../rocketmq/proxy/service/ClusterServiceManager.java	0.00% <0.00%> (ø)
...q/proxy/service/message/ClusterMessageService.java	11.66% <0.00%> (ø)
...q/proxy/service/metadata/LocalMetadataService.java	0.00% <ø> (ø)
...proxy/service/relay/AbstractProxyRelayService.java	17.64% <ø> (ø)
...ocketmq/proxy/service/route/TopicRouteService.java	58.92% <ø> (ø)
...ervice/transaction/AbstractTransactionService.java	82.14% <0.00%> (ø)
...y/service/transaction/LocalTransactionService.java	0.00% <ø> (ø)
... and 14 more

... and 22 files with indirect coverage changes

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[drpmma]

LGTM