Fix placement of quick survey

• On desktop it will not appears above the first heading and if no

headings are available after the first paragraph.. e.g. stubs and
articles without a lead section

• Checked all browser test pages and no regressions from previous

pages

• Add tests to ensure only one survey gets added after bug in code

review

Note: this doesn't fix any styling issues that might be associated
with the quick surveys, it simply identifies the correct position it
should be located

Bug: T113651
Change-Id: Id8ac93547cde07f45390aad05cac5c61b200c130