Fix default name evaluation for CDI beans

[NicolaIsotta]

This PR fixes the evaluation of the default name for CDI beans to strictly align with the CDI specifications.

Quoting CDI 1.1 specs:

The default name for a managed bean is the unqualified class name of the bean class, after converting the first character to lower case.
For example, if the bean class is named ProductList, the default bean name is productList.

Subsequent specifications all maintain the exact same text. Here is the latest: Jakarta EE CDI 4.1.

Historical Notes

I'm not exactly sure why the behavior was originally changed. My guess is that some implementations weren't perfectly aligned with the specifications at the time. For historical context on the deviation, see:

• NetBeans Bugzilla Issue #249438
• Related StackOverflow discussion
• commit

NB: this currently targets master, but it would be nice to have this in NB30

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