Add missing changes for eclipselink

[MonkeyCanCode]

Description

Seems like some changes got missing after switch from build logic from Groovy to Kotlin

Fixes 47

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Same as #47

Checklist:

Please delete options that are not relevant.

• I have performed a self-review of my code
• [] I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• If adding new functionality, I have discussed my implementation with the community using the linked GitHub issue
• I have signed and submitted the ICLA and if needed, the CCLA. See Contributing for details.

[MonkeyCanCode]

@snazy @collado-mike maybe duplicated of #114 as the change was intensional? But "implementation(libs.h2)" is still needed to add h2 lib for default persistent backend.

[sfc-gh-aixu]

I intentionally keep this to be polaris rather than polaris-dev. polaris-dev is used in test and polaris is used for production.

[sfc-gh-aixu]

Otherwise, if we have persistence.xml from test resource and production resource, we are loading the one from test resource.

[MonkeyCanCode]

Got it. Let me revert this one...but I don't think we will need this PR as the change is intensional based off https://github.com/polaris-catalog/polaris/pull/114/files. I think the only thing that is missing there is h2 lib import. Let me close this one and use 114 to add that in.

[MonkeyCanCode]

@collado-mike close this one and added comment in your PR for including h2 lib if people ant to use default persist backend with h2.