Added completeWords flag to limit str method #52245
                
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This was originally from PR #52110 but there was an issue with the branching.
Currently for limiting string lengths you can use Str::limit and Str::words which are great options. The problem that I ran into is that I would like to limit the string to whole words. Str::limit can cut into a word and Str::words can be tough to use since the length of a string is wildly different depending on word sizes. This PR adds a new completeWords flag to the limit method that will respect word boundaries.