[StyleCleanUp] Addressing SA warnings Part 2

[harshit7962]

Description

This work is a part of our initiative to set code-style guidelines, align WPF and WinForms, and ensure PR standards with respect to styles. This in turn will help us in better maintainability and readability of the repo overall. The changes follow up from the PR #10080 and references to the issue #10017.

The current changes addresses the following Errors/Warnings in the src folder of WPF:

• SA1206: The keywords within the declaration of an element should follow a standard ordering scheme
• SA1513: Closing brace should be followed by blank line
• SA1518: Code should not contain blank lines at the end of the file
• SA1508: A closing brace should not be preceded by a blank line
• SA1507: Code should not contain multiple blank lines in a row
• SA1505: An opening brace should not be followed by a blank line
• SA1500: Braces for multi-line statements should not share line

A good way to go about reviewing this is to go commit by commit which pans over individual errors/warnings, and hence easing out the overall understanding. For the error SA1513, there are two sets of changes, and going through the later one first will possibly give a clearer idea.

Customer Impact

None

Regression

None

Testing

Local Build Pass
The current set of changes looks fairly mechanical and probably don't need a Test Pass, but these set of PRs can be clubbed to do so at a later stage.

Risk

Low.

Microsoft Reviewers: Open in CodeFlow