Improved regular expression for data-sets when functional flag is used.

[tommyseus]

Hi, I have problems with the function flag and data providers.

1st Problem
I have tests with more than 10 data sets and numeric keys.

The regex as it is generated now does not properly filter the test for the wrapper.

"%s\s.*1.*$/" (matches with keys 1, 11, 12, 13, ...)

This leads to strange results on the cli.

.................... 20 / 20 (100%)
. 21 / 20 (105%)
. 22 / 20 (110%)
. 23 / 20 (114%)
. 24 / 20 (120%)

I have fixed it by using dataSetAsString and removed the willdcards from the regex.

2nd Problem

Some tests are using the class name as key for the data-provider.

The regex is not properly escaped for class names.
I fixed it using preg_quote.

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I tried to reflect the problem in the unit test adjustments. Without the SuiteLoader adjustments the tests will fail.

Manually tested only with PHP 8.3.