chore: add changesets

Signed-off-by: braks <78412429+bcakmakoglu@users.noreply.github.com>

.changeset/new-falcons-approve.md

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+---
+'@vue-flow/core': patch
+---
+
+Add `valid` and `connecting` class names instead of `vue-flow__handle-valid` and `vue-flow__handle-connecting` (old class names kept for backwards compatibility but will be removed in the future)

.changeset/shaggy-dots-wait.md

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+---
+'@vue-flow/core': patch
+---
+
+Fix ios connection error