Go: allow single pattern field to match composite literals

[aryx]

This closes #5452

test plan:
test file included

PR checklist:

• Documentation is up-to-date
• Changelog is up-to-date
• Change has no security implications (otherwise, ping security team)

[linear]

PA-1453 Go: Unable to match specific members within a struct initialization when using `pattern-inside`

Describe the bug
I'm having trouble matching specific MemberName: Value pairs when using a pattern-inside along with a pattern to match specific members of a struct.

To Reproduce
https://semgrep.dev/s/68B1

Expected behavior
The InsecureSkipVerify: true should match

What is the priority of the bug to you?

• P0: blocking your adoption of Semgrep or workflow
• P1: important to fix or quite annoying
• P2: regular bug that should get fixed

Use case
Allow me to write more detailed Go rules
From #5452
Originally opened by enncoded