Optimize Gradle tasks and configurations

[malliaridis]

Description

With the Gradle upgrades over time, some lines can be optimized and focus more on lazy initialization of only the necessary tasks to improve build times.

Solution

This PR applies some recommended refactorings to gradle files, including:

• Use tasks.configureEach { ... } instead of tasks.all { ... } for task configuration
• Use tasks.register(...) instead of task ... for task registration
• Disable java rendering-doc for UI module

The commits aae5452 and 52b5ee4 can be backported to Solr 9.x.

Tests

No tests have been altered

Checklist

Please review the following and check all that apply:

• I have reviewed the guidelines for How to Contribute and my code conforms to the standards described there to the best of my ability.
• I have created a Jira issue and added the issue ID to my pull request title.
• I have given Solr maintainers access to contribute to my PR branch. (optional but recommended, not available for branches on forks living under an organisation)
• I have developed this patch against the main branch.
• I have run ./gradlew check.
• I have added tests for my changes.
• I have added documentation for the Reference Guide

[epugh]

Thanks for this! I've noticed that builds have been getting slower ;-)

[malliaridis]

One of the reasons is that we are now compiling wasmJs executables during precommit, which lasts about 8 minutes and is by far the longest task. I was considering disabling it in precommit, but I'm not sure if this is a good idea. :/