[ADR-0006][AC-319] Migrate all tests to use jest mock instead of substitute (#6520)

Standardize on using jest mock instead of having two mocking frameworks which can be confusing.

apps/web/.eslintrc.json

@@ -15,8 +15,7 @@
           "@bitwarden/web-vault/*",
           "src/**/*",
           "bitwarden_license"
-        ],
-        "paths": ["@fluffy-spoon/substitute"]
+        ]
       }
     ]
   }