Adiantek patch 1 (bootstrap-vue-next#1373)

* fix(BOverlay): add null as an option to BOverlay

* perf(BModal): 0px blur on chrome causes FPS drop

---------

Co-authored-by: Adrian Antkowiak <[email protected]>

Author: VividLemon

packages/bootstrap-vue-next/src/components/BModal.vue

@@ -90,7 +90,7 @@
             no-spinner
             fixed
             no-wrap
-            blur="0px"
+            :blur="null"
             @click="hide('backdrop')"
           />
         </slot>

packages/bootstrap-vue-next/src/components/BOverlay/BOverlay.vue

@@ -38,7 +38,7 @@ import BSpinner from '../BSpinner.vue'
 const props = withDefaults(
   defineProps<{
     bgColor?: string
-    blur?: string
+    blur?: string | null
     fixed?: Booleanish
     noCenter?: Booleanish
     noFade?: Booleanish