Use getResourceAsStream for JStyle reload

[subhramit]

Follow-up to #13075
Addresses #13075 (comment)
Refs. JabRef#693, #13073

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[trag-bot]

The try block covers multiple statements, which is against the guideline to cover as few statements as possible. This can make exception handling less precise.

[koppor]

Maybe a small comment, why styleFile is not used here, but path.

The two variables should be put togehter at the declaration above in this file maybe? Maybe, there could be comments added to each variable.

[Siedlerchr]

needs to support both internal and extenral style files

[subhramit]

The two variables should be put togehter at the declaration above in this file maybe?

Class level variables, used at different places.

Maybe, there could be comments added to each variable.

Done. field-level javadoc should appear on hover.

[trag-bot]

@trag-bot didn't find any issues in the code! ✅✨