iRule to set SameSite for compatible clients and remove it for incompatible clients (LTM|ASM|APM)

We have APM enabled on this affected virtual server and also another iRule. The reason we were using the SameSite iRule is that in this case we are using external IdP and when the SAML response in SLO comes back, we need to modify the APM cookie SameSite values to None in order it to work. I combined the two iRules together but never got it to work and always got the same error i posted here earlier. The workaround we came up was to do a redirect after the SAML SLO response and removed that SameSite iRule code lines from the virtual server. The workaround is not ideal, but at least we got it working again. I think I have read somewhere that the APM SameSite values are modifiable from APM profile in 16.x version but we are not yet ready to upgrade to that release.