[iOS] Updated RichTextBlock wrap behavior

[jwoo-msft]

Related Issue

Fixed #6365.
Long RichTextBlock's text will get cut off unexpectedly when it's inside a column with shorter width.

Description

This change changed the order when the compression resistance is applied. Applying compression resistance after a view is added to UIStackView does not produce the desired effect. The change applies the compression resistance first, then added to the stack iew.

Sample Card

{
    "type": "AdaptiveCard",
    "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
    "version": "1.3",
    "body": [
        {
            "type": "ColumnSet",
            "columns": [
                {
                    "type": "Column",
                    "width": "stretch",
                    "items": [
                        {
                            "type": "RichTextBlock",
                            "inlines": [
                                   {
                                    "type": "TextRun",
                                    "text": "Step 1\n\n",
                                    "size": "large"                                                                      
                                },        
                                {
                                    "type": "TextRun",
                                    "text": "Season the chicken with salt and pepper.  Add the carrot, celery, chicken, noodles and broth to a 6-quart Instant Pot®",
                                    "wrap": true
                                }                                
                            ]
                        }
                    ]
                },
                {
                    "type": "Column",
                    "width": "auto",
                    "items": [
                        {
                            "type": "ActionSet",
                            "actions": [
                                {
                                    "type": "Action.Submit",
                                    "title": "Action.Submit"
                                }
                            ]
                        }
                    ]
                }
            ]
        }
    ]
}

How Verified

Microsoft Reviewers: Open in CodeFlow

Microsoft Reviewers: Open in CodeFlow

[almedina-ms]

[paulcam206]

@jwoo-msft - looks like you have a merge conflict to fix up :)

[jwoo-msft]

@jwoo-msft - looks like you have a merge conflict to fix up :)

@paulcam206, i had to look into positional ambiguity with buttons. it's all fixed up. :-)