[5.3] Optional content.prepare on text fields

[brianteeman]

Pull Request for Issue #42824 .

Summary of Changes

Add a field param to the text field plugin to allow content.prepare plugins such as mailcloak to process the field

Testing Instructions

Create a text field for an article
Enter an email address into the article
Check the output of the article and see if the email address is cloaked

Actual result BEFORE applying this Pull Request

Email address is plain text

Expected result AFTER applying this Pull Request

Email address is plain text
Change the field value in the text field plugin to Yes - the email address is cloaked
Change the field value in the field to No - the email address is not cloaked
Change the field value in the field to Yes - the email address is cloaked

This is fully b/c as the content.prepare is not enabled by default

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

[fgsw]

I have tested this item ✅ successfully on 411a9be

Comment:

#### Test instructions:
Change the field value in the field to Yes - the email address is not cloaked
#### Test result:
Change the field value in the field to Yes - the email address is cloaked.

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[brianteeman]

@fgsw thanks I fixed the error in the test instructions

[alikon]

setting RTC cause it was successfully tested by @Quy too

[alikon]

RTC

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