What is this change required?
We were seeing this error on CI
```
1) Fast edit when editing text that has strange characters saves when paragraph contains apostrophe
Failure/Error:
expect(find("#{topic_page.post_by_number_selector(2)} .cooked p")).to have_content(
"It ‘twas a great’ “day”!",
)
Selenium::WebDriver::Error::StaleElementReferenceError:
stale element reference: stale element not found
(Session info: chrome=114.0.5735.90)
```
I believe this is because the element that is "found" using `find` is
eventually re-rendered before the `have_content` matcher is called on
it.
Small js fix for fast edit to allow posts to save changes when the post contains apostrophes and quotation marks. Replaces unicode characters in text prior to saving the edit.
Includes system tests for fast edit and introduces a new system spec component for fast edit usage.
