[embedding] Add 2 web files for Embedding API test cases

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 94, fail 14, block 0
[usecase-embedding] Improve Embedding API usecases

- add 1 layout file
- update test purpose for OnCreateWindowRequestedActivity.java

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 13, fail 2, block 0
Merge pull request #1076 from zhuyongyong/yongzhu/usecase-embeddingAPI-v10/improve

[usecase-embedding] Improve Embedding API usecases
Merge pull request #1072 from zhuyongyong/yongzhu/embeddingAPI-v10/addWebFile

[embedding] Add 2 web files for embeddingAPI test cases