Upgrade element 1.11.72

[MarcWadai]

1.11.70

• Remove outdated iframe sandbox attribute (Remove outdated iframe sandbox attribute matrix-org/matrix-react-sdk#12633)
• Fix stray background colour on markdown body (Fix stray background colour on markdown body matrix-org/matrix-react-sdk#12628)
• Add SSO redirect option for login page (Add SSO redirect option for login page element-hq/element-web#27576)

Retrocompatibily issue with Firefox esr versions

• Polyfill Intl.Segmenter
• Or revert commit that introduce it in element

### Tasks
- [ ] https://github.com/tchapgouv/tchap-web-v4/issues/1080
- [ ] https://github.com/tchapgouv/tchap-web-v4/issues/1081
- [ ] https://github.com/tchapgouv/tchap-web-v4/issues/1077
- [ ] https://github.com/tchapgouv/tchap-web-v4/issues/1083
- [ ] https://github.com/tchapgouv/tchap-web-v4/issues/1096

[MarcWadai]

• Le commit introduisant la régression côté element : replace graphemer by unicode-segmenter matrix-org/matrix-react-sdk#12617
• Cependant, il faudra aussi voir si le simple revert de la pr marche car compound-web utilise aussi l'api Segmenter.

[MarcWadai]

Polyfill made by element element-hq/element-web#27803