improved failure message readability of failing ObjectContaining tests

[colinacassidy]

Summary

Improves failure message readability of failing ObjectContaining tests by removing highlighting from irrelevant keys. Closes #14897

ex, changes error message from:

- Expected  - 2
+ Received  + 3

- ObjectContaining {
+ Object {
+   "a": 1,
    "b": 2,
-   "c": 2,
+   "c": 3,
  }

to:

- Expected  - 2
+ Received  + 2

- ObjectContaining {
+ Object {
    "a": 1,
    "b": 2,
-   "c": 2,
+   "c": 3,
  }

Test plan

Modify unit test for ObjectContaining to reflect this behavior shown above.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: colinacassidy (4136568)
• ✅ login: SimenB / name: Simen Bekkhus (b125079, 528ae0a)

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[SimenB]

thanks!