fix duplicated shadow dom (#1095)

* fix: duplicated elements in shadow doms

clean observers before taking new full snapshots

* add checker for replayer to make it stable when data has duplicated nodes

* apply review suggestions

* add change log

* Apply formatting changes

* update prettier to fit the master branch

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Co-authored-by: Mark-Fenng <Mark-Fenng@users.noreply.github.com>

package.json

@@ -32,6 +32,7 @@
     "lerna": "^4.0.0",
     "markdownlint": "^0.25.1",
     "markdownlint-cli": "^0.31.1",
+    "prettier": "2.8.4",
     "turbo": "^1.2.4",
     "typescript": "^4.7.3"
   },