MINOR: Improve the KAFKA_HEAP_OPTS definition while run kafka-server-start.bat Batch

[realFranco]

Info

• Remove the wmic dependency while run kafka-server-start.bat script in order to defined the KAFKA_HEAP_OPTS if is not previously defined.

Why

• If the host machine do not have the wmic dependency, the execution will gonna fail;
• If the host machine contains restrictions about the way of:
  • install dependencies;
  • environment variables;
  • PATH modifications the Kafka service won't start.

Evidence

# powershell
systeminfo

Host Name: ...
OS Name: ... Microsoft Windows 11 Enterprise
OS Version: ... 10.0.26100 ...

...

System Type: ... x64-based PC

...

A way of execute Kafka (one of the possible many ways) and the error expected:

# powershell
cd C:\directory\kafka; .\bin\windows\kafka-server-start.bat .\config\server.properties
'wmic' is not recognized as an internal or external command,
operable program or batch file.

After apply the contribution we have Kafka working as expected.

Disclaimer

UNIX user here, I do not invest to much time about the collateral damage and/or why the wmic is required.

[realFranco]

"The Windows Management Instrumentation Command line (WMIC) was deprecated in 2016."

See: https://techcommunity.microsoft.com/blog/windows-itpro-blog/wmi-command-line-wmic-utility-deprecation-next-steps/4039242.

Maybe it is a good time to introduce some updates 🫶

[github-actions]

A label of 'needs-attention' was automatically added to this PR in order to raise the
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