Add strict_mode: false

As strict mode is in place, the default strict_mode is now set to true. We are encourage teams to write tests in strict_mode to make tests Bivalent (able to run on device and devicelessly)
For more info on strict mode: go/roboStrictMode

Test: atest KeyChainRoboTests
Bug: 334089788
Change-Id: I04dce5c4a3a5ae57d0c3da8e4a924e6e02eb4949