FormControlLabel is required with latest alpha release

FormControlLabel without label brakes the component with 5.0.0-alpha.33. Prior to this release it was optional.

Cannot read property 'type' of undefined

• [X ] The issue is present in the latest release.
• [ X] I have searched the issues of this repository and believe that this is not a duplicate.

Current Behavior 😯

When label is not provided FormControlLabel throws error Cannot read property 'type' of undefined

Expected Behavior 🤔

It should render without error

Steps to Reproduce 🕹

Create FormControlLabel without label. https://codesandbox.io/s/mystifying-snow-ksc4t?file=/src/Demo.tsx:232-248

Steps:

Context 🔦

Your Environment 🌎

`npx @material-ui/envinfo`

  Don't forget to mention which browser you used.
  Output from `npx @material-ui/envinfo` goes here.

[oliviertassinari]

I would vote for making the label required.

[mnajdova]

My first vote would be to make the label required, I don’t see what is the use-case of using a FormControlLabel without a label. If you can share one it would be great!

If we don’t want to make this breaking change, this diff should fix the issue and preserve the previous behavior:

diff --git a/packages/material-ui/src/FormControlLabel/FormControlLabel.js b/packages/material-ui/src/FormControlLabel/FormControlLabel.js
index 17389479ee..9c17f89974 100644
--- a/packages/material-ui/src/FormControlLabel/FormControlLabel.js
+++ b/packages/material-ui/src/FormControlLabel/FormControlLabel.js
@@ -129,7 +129,7 @@ const FormControlLabel = React.forwardRef(function FormControlLabel(inProps, ref
       {...other}
     >
       {React.cloneElement(control, controlProps)}
-      {label.type === Typography || disableTypography ? (
+      {label && label.type === Typography || disableTypography ? (
         label
       ) : (
         <Typography component="span" className={classes.label} {...componentProps.typography}>