Tweak autoClosingPairs to make PHP docblock insertion less intrusive

[kAlvaro]

As soon as you type /** you immediately get /**𝖨 */ (where 𝖨 is the cursor). If you didn't intend to start a docblock you need to remove the extraneous */. I'd appreciate two enhancements:

• Expand to docblock only after /**<space> or /**<enter>.
• Disable the overall feature if you're already inside a comment and maybe if the line already has code before the caret. (Other invalid contexts seem to be detected nicely.)

This is a follow-up to #51047.

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• autoClosingPairs are too aggressive (#51047)

[roblourens]

This matches js/ts and other languages, we don't have the ability to do more, but there are open requests to extend the basic feature such as #1966