master
[code-infra] Enable undefined addition to optional properties (#47750)
[code-infra] a few fixes uncovered during ESM updates (#45031)
[code-infra] Convert leaf @mui/system .js+.d.ts pairs to TypeScript (part 1) (#48578)
[core] Normalize rest / other to match the most common used
[system] Enable configuring the `sx` prop in the `theme` (#35150)
[system] Fix theme mutation when using responsive typography shorthand in sx (#48266)
[code-infra] Remove React import requirement for jsx (#47146)