ENH: limit max length of success message to improve legibility

[sunnysideup]

Description

When you save a record and the title or type of the record is really long then you can not read it in the "success" message.

https://github.com/silverstripe/silverstripe-framework/blob/5/src/Forms/GridField/GridFieldDetailForm_ItemRequest.php#L569-L570

I would propose that we limit the length to say 40 chars per item so that it is legible and does not look weird.

Additional context or points of discussion

No response

Validations

• You intend to implement the feature yourself
• You have read the contributing guide
• You strongly believe this feature should be in core, rather than being its own community module
• You have checked for existing issues or pull requests related to this feature (and didn't find any)

[GuySartorelli]

Sounds sensible. Probably should be handled with css via text-overflow: ellipsis; rather than php.
Thanks for raising this, I'm looking forward to the PR 👍
Note that I've marked this as a bug - please target the PR to the 4.13 or equivalent branch.