[fix][fn] fix function failed to start if no typeClassName provided in FunctionDetails

[freeznet]

Master Issue: #18110

Motivation

When user run pulsar functions directly without pulsar-admin functions create or pulsar-admin functions localrun, it requires to provide typeClassName in functionDetails, otherwise the function will failed to start.

Modifications

try to inferring the typeClassName at runtime for Function, Sink and Source.

Verifying this change

• Make sure that the change passes the CI checks.

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

(or)

This change is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

(example:)

• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• Anything that affects deployment

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository: freeznet#8

[codecov-commenter]

Codecov Report

Merging #18111 (85c16f7) into master (6c65ca0) will increase coverage by 10.94%.
The diff coverage is 30.46%.

@@              Coverage Diff              @@
##             master   #18111       +/-   ##
=============================================
+ Coverage     34.91%   45.85%   +10.94%     
- Complexity     5707    17614    +11907     
=============================================
  Files           607     1574      +967     
  Lines         53396   128526    +75130     
  Branches       5712    14149     +8437     
=============================================
+ Hits          18644    58939    +40295     
- Misses        32119    63478    +31359     
- Partials       2633     6109     +3476     

Flag	Coverage Δ
unittests	45.85% <30.46%> (+10.94%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../main/java/org/apache/pulsar/PulsarStandalone.java	0.00% <0.00%> (ø)
.../apache/pulsar/broker/admin/impl/ClustersBase.java	76.66% <0.00%> (+67.62%)	⬆️
...pache/pulsar/broker/admin/impl/NamespacesBase.java	61.93% <ø> (+47.40%)	⬆️
.../pulsar/broker/service/AbstractBaseDispatcher.java	52.14% <0.00%> (+6.28%)	⬆️
...che/pulsar/broker/service/BacklogQuotaManager.java	12.39% <0.00%> (+2.91%)	⬆️
.../pulsar/broker/service/BrokerServiceException.java	42.59% <0.00%> (+17.59%)	⬆️
...ava/org/apache/pulsar/broker/service/Consumer.java	68.61% <0.00%> (+6.60%)	⬆️
...ava/org/apache/pulsar/broker/service/Producer.java	62.42% <0.00%> (+2.78%)	⬆️
...pulsar/broker/service/PulsarCommandSenderImpl.java	74.35% <0.00%> (+7.69%)	⬆️
...va/org/apache/pulsar/broker/service/ServerCnx.java	46.82% <0.00%> (+1.48%)	⬆️
... and 1161 more