Adding Image Transform breaks RichText Field

[fmolina24]

Description

Adding a image transform break rich text fields set with Available Transforms to all. It breaks with the following exception:
in_array() expects parameter 2 to be array, string given

The issue is related to the fact that $this->availableTransform is a string "*" and in_array expects an array in the second argument.

Problem is in vendor/craftcms/cms/src/fields/RichText.php:515

Steps to reproduce

1. Create a Image Transform and Asset Volume.
2. Create a Entry single type that has a Rich text field with Available Transforms set to all.
3. Try to edit entry content notice.

Additional info

• Craft version: 3.0.0-beta.1
• PHP version: 7.0.8 (MAMP PRO)
• Database driver & version: MySQL 5.5.42
• Plugins & versions: Clean Install.

[brandonkelly]

Fixed - thanks!