Matter Switch: remove double init on device added

[ctowns]

The device_added handler was calling device_init in order to account for situations where device_init was not called due to a race condition with the device cache. Since lifecycle events are now guaranteed and ordered with FW 58, we no longer need to depend on this extra init.

Type of Change

• WWST Certification Request
  • If this is your first time contributing code:
    • I have reviewed the README.md file
    • I have reviewed the CODE_OF_CONDUCT.md file
    • I have signed the CLA
  • I plan on entering a WWST Certification Request or have entered a request through the WWST Certification console at developer.smartthings.com
• Bug fix
• New feature
• Refactor

Checklist

• I have performed a self-review of my code
• I have commented my code in hard-to-understand areas
• I have verified my changes by testing with a device or have communicated a plan for testing
• I am adding new behavior, such as adding a sub-driver, and have added and run new unit tests to cover the new behavior

Description of Change

Summary of Completed Tests

[github-actions]

Test Results

   68 files    447 suites   0s ⏱️
2 325 tests 2 325 ✅ 0 💤 0 ❌
3 924 runs  3 924 ✅ 0 💤 0 ❌

Results for commit 655ed87.

[github-actions]

File	Coverage
All files	92%	✅
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-switch/src/embedded-cluster-utils.lua	38%	❌
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-switch/src/third-reality-mk1/init.lua	95%	✅
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-switch/src/aqara-cube/init.lua	96%	✅
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-switch/src/init.lua	92%	✅
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-switch/src/eve-energy/init.lua	92%	✅

Minimum allowed coverage is 90%

Generated by 🐒 cobertura-action against 655ed87

[github-actions]

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