Text info of activation track is clipped in the inspector.

Steps To Repro:

1. Menu > Window
2. Sequencing > Timeline
2. Hierarchy > Select the Main Camera
3. Timeline > Create
4. Timeline > Right click > Activation track

Note: The Activation playable asset doesn't contain anything. It doesn't have any functionality.

Actual Result
The "Activation Playable Asset" text is clipped and appears as "Activation Playable As"

Expected Result
Complete text should appear in the hierarchy.

Reproducible On:
2018.3.0a5, 2018.3.0a1

Not Reproducible On:
2018.2.0f2

Environment
Windows and Mac.