Clean Code for ui/org.eclipse.tools.layout.spy

[eclipse-pde-bot]

The following cleanups where applied:

• Add final modifier to private fields
• Add missing '@Deprecated' annotations
• Add missing '@Override' annotations
• Add missing '@Override' annotations to implementations of interface methods
• Convert control statement bodies to block
• Make inner classes static where possible
• Remove unnecessary array creation for varargs
• Replace deprecated calls with inlined content where possible
• Use pattern matching for instanceof

[github-actions]

Test Results

   285 files  ±0     285 suites  ±0   47m 13s ⏱️ - 3m 4s
 3 611 tests ±0   3 535 ✅ ±0   76 💤 ±0  0 ❌ ±0 
11 025 runs  ±0  10 794 ✅ ±0  231 💤 ±0  0 ❌ ±0 

Results for commit 16e2140. ± Comparison against base commit 4873af8.