fix: Warn users when trying to delete a container

[shivamG640]

Fixes #1042

[apupier]

the behavior doesn't corresponds to the title neither the initial issue:

• the modal appears also for for steps, not only for containers
• the text message is not corresponding the proposed one in the issue. it doesn't seem to follow the recommendations from Patternfly neither https://www.patternfly.org/components/modal/design-guidelines/#confirm-a-destructive-action , like it doesn't communicate the consequences

[shivamG640]

the behavior doesn't corresponds to the title neither the initial issue:

• the modal appears also for for steps, not only for containers
• the text message is not corresponding the proposed one in the issue. it doesn't seem to follow the recommendations from Patternfly neither https://www.patternfly.org/components/modal/design-guidelines/#confirm-a-destructive-action , like it doesn't communicate the consequences

the behavior doesn't corresponds to the title neither the initial issue:

• the modal appears also for for steps, not only for containers
• the text message is not corresponding the proposed one in the issue. it doesn't seem to follow the recommendations from Patternfly neither https://www.patternfly.org/components/modal/design-guidelines/#confirm-a-destructive-action , like it doesn't communicate the consequences

Thanks for the review and comment @apupier

• The Modal only appears for those step which can have children or special children components. The For all the containers as well. check here: https://shivamg640.github.io/kaoto/
• The message on the Modal is not clear as of now. We Plan to improve it for sure!

[lhein]

I would slightly rephrase the dialog texts...

Title: Delete multiple steps
Text: You are about to delete multiple steps from your integration. Are you sure?

Additionally I spotted another issue...if you for instance add an empty "filter" component, the dialog pops up too regardless if the filter has children or not.

[lordrip]

I added the text changes

[lordrip]

Looks good, thanks for taking care of this.

There's a remaining issue that will be tackled on an upcoming PR, about deleting the from node, which states that steps will be removed, which it's not the case