Attrs: Remove outdated valHook for option element

This hook was relevant for BlackBerry 4.7 which is no longer supported.

But this code path now raises error in IE10-11 (#14686) in 1.x-master branch.
So to just to be safe, also add test for IE issue to this branch too.
Tests: Add assertion for the jQuery#val method
Tests: Fix code style issues
Traversing: Check all pairwise element combinations for .find( els )

Ref b8d0d54a3c4960794a1b492957abeb56eddd1e48
Fixes #14701