[BUGFIX] Simulate submit button for rsaauth form submit

This patch adds the name and value of the first submit button found in a
form to the input field used to send the form.

RsaEncryptionWithLib.min.js created with:
../../../../../../Build/node_modules/uglify-js/bin/uglifyjs \
RsaLibrary.js RsaEncryption.js > RsaEncryptionWithLib.min.js

Resolves: #76120
Releases: master, 8.7, 7.6
Change-Id: I3f0fdc7e933267689114d5bcf62d3fcfe2db5146
Reviewed-on: https://review.typo3.org/56104


Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>