fix(sso): use issuer as entityID in auto-generated idp metadata xml

Author: waleedlatif1

apps/sim/app/api/auth/sso/register/route.ts

@@ -407,7 +407,7 @@ export async function POST(request: NextRequest) {
       const computedIdpMetadataXml =
         idpMetadata ||
         `<?xml version="1.0"?>
-<EntityDescriptor xmlns="urn:oasis:names:tc:SAML:2.0:metadata" entityID="${escapeXml(entryPoint)}">
+<EntityDescriptor xmlns="urn:oasis:names:tc:SAML:2.0:metadata" entityID="${escapeXml(issuer)}">
   <IDPSSODescriptor WantAuthnRequestsSigned="false" protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
     <KeyDescriptor use="signing">
       <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">

packages/db/scripts/register-sso-provider.ts

@@ -283,7 +283,7 @@ function buildSSOConfigFromEnv(): SSOProviderConfig | null {
         .replace(/\s/g, '')
       const escapedEntryPoint = escapeXml(entryPoint)
       computedIdpMetadata = `<?xml version="1.0"?>
-<EntityDescriptor xmlns="urn:oasis:names:tc:SAML:2.0:metadata" entityID="${escapedEntryPoint}">
+<EntityDescriptor xmlns="urn:oasis:names:tc:SAML:2.0:metadata" entityID="${escapeXml(issuer)}">
   <IDPSSODescriptor WantAuthnRequestsSigned="false" protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
     <KeyDescriptor use="signing">
       <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">