[BUG] Remove $parent and $children handlers

[aniamusial]

Describe the bug Using this.$parent and this.$children for operating on the dom is considered a bad practice and is not working for most of the website builders. We should remove it from following components:

• SfTabs
• SfAccordion
• SfComponentSelectOption
• SfToastItem
• SfContentCategory
• SfContentPage
• SfFooterColumn
• SfTab

┆Issue is synchronized with this Jira Zadanie by Unito

[shatanov]

Hi, @aniamusial , I would like to take this issues, but we need to discuss what to replace $parents and $children with. as it seems to me, this.$parent can be replaced with provide/inject, and this.$children on refs, what do you think?

[justyna-13]

Hi @shatanov, I can assign this task to you if you're still interested in it :) when it comes to your question about of solving this, I think it's important to get rid of $parent and $children and the exact solution will be checked when PR is done :)

[shatanov]

Hi @shatanov, I can assign this task to you if you're still interested in it :) when it comes to your question about of solving this, I think it's important to get rid of $parent and $children and the exact solution will be checked when PR is done :)

OK, I can try)

[justyna-13]

@shatanov great :) it's yours

[AdamPawlinski]

I'm closing this ticket as it doesn't meet the requirements of LTS policy..