Return a code action for each diagnostic record by andyleejordan · Pull Request #1718 · PowerShell/PowerShellEditorServices

Currently, PSSA's `SuggestCorrections` property of the
`DiagnosticRecord` object already is an array, but no built-in rules
return more than one suggested correction, which led to
`PowerShellEditorServices` not correctly translating this array before
returning it as an code action as it only ever displayed one. This fixes
it by making it generic again so it returns a code action for each
suggest correction. It's basically just performing a `foreach` loop and
calling `ToTextEdit` just once.

This is a pre-requisite for an implementation of this, where a built-in
rule will return multiple suggest corrections:
PowerShell/PSScriptAnalyzer#1767

I've manually tested this with a modified version of PSScriptAnalyzer
where I return two suggested corrections. The extension's UI now shows
me the two different suggested code actions and also applies them
correctly.