Replace bootstrap-vue components incompatible with Vue 3 @vue/compat

[dannon]

Bootstrap-vue v2 components that use scoped slots crash at runtime under `@vue/compat`:

```
TypeError: Cannot read properties of null (reading 'ce')
at renderSlot (vue.cjs.js)
```

Simple components (BButton, BAlert, BCard, BFormInput) work fine through compat. But any component that passes data through slot scopes hits this error. These must be replaced with custom implementations before the Vue 3 migration (#20787) can complete.

Affected components

Component	Files	Replacement	Status
BTable	~45 files	GTable / GCard	✅ Done — #21703
BModal (with scoped slots)	~34 files	GModal	✅ Done — #21976
v-b-modal directive	17 uses	—	Not started
BTabs / BTab	14 files	GTabs / GTab	Merged — #21960
BDropdown (+ variants)	27 files	GDropdown family	#21961
BPopover	15 files	GPopover	#21959
BCollapse	11 files	GCollapse	#21958
BOverlay	5 files	GOverlay	Merged — #21957
v-b-tooltip directive	140 files (290 uses)	v-g-tooltip directive	#21962 — works through compat but replacing proactively

All custom replacements use `@floating-ui/dom` for positioning (popover/dropdown) or simple CSS transitions, with no external dependencies beyond what's already in the project.

The `v-b-tooltip` directive technically works through compat (directives don't use scoped slots), but is being replaced with a custom `v-g-tooltip` directive as part of the same effort to eliminate the bootstrap-vue dependency.

Progress

• BTabs / GTab — Replace BTabs/BTab with custom GTabs/GTab components #21960 (merged)
• BDropdown → GDropdown — Replace BDropdown family with custom GDropdown components #21961
• BPopover → GPopover — Replace BPopover with custom GPopover component #21959
• BCollapse → GCollapse — Replace BCollapse with custom GCollapse component #21958
• BOverlay → GOverlay — Replace BOverlay with custom GOverlay component #21957 (merged)
• v-b-tooltip → v-g-tooltip (140 files, 290 uses) — Replace v-b-tooltip directive with custom v-g-tooltip #21962
• BTable → GTable / GCard — Replace BTable with GTable or GCard #21703
• BModal → GModal — Replace BModal with the existing GModal component #21976
• v-b-modal directive — Also fixed in PRs fixing Replace BModal with the existing GModal component #21976

Related

• Vue3 #20787 — Vue 3 migration PR
• Replace BTable with GTable or GCard #21703 — BTable → GTable / GCard (sub-tracking)

[ahmedhamidawan]

I have WIP here for a specific modal, I can take on all other BModals in the same PR if no one else wants to?