Move expectDeprecation and expectNoDeprecation onto assert

[thoov]

Apart of #15988

Moves expectDeprecation, expectNoDeprecation, and ignoreDeprecation onto assert and off of the window global.

This PR does the following:

• Moves expectDeprecation, expectNoDeprecation, & ignoreDeprecation onto assert
• Refactors all tests that use these methods to be invoked off of assert.
• Adds test cases for assert.expectDeprecation & assert.expectNoDeprecation

[locks]

@thoov you might need to rebase this ;x