Revert "Fixed failing tests because of uppercase tagName change"

This reverts commit 250b70c38cd7461d093f0d5bf5e13e4b77dbaffa.
Revert "Updated vnode.tagName to be stored as uppercase, with test"

This reverts commit 0cd086c1edf6abe3a446b3c5fc16b73118d10c02.
Updated virtual-hyperscript parse-tag to convert tagName to uppercase by default
Fixed input.value soft hook failing test
Fixed failing tests because of uppercase tagName change