[WIP] Fix count display issue in node objectdetcount

[Copilot]

Plan: Fix ObjDetCount Blinking Behavior

Problem Analysis

• Understand current behavior: Node only blinks on threshold crossing (edge transition)
• Current issue: When count is at +100 (within threshold), no blinking occurs
• Root cause: trigger_active is only True during edge transitions, not while within threshold

Solution

• Change blinking logic to activate whenever count is within the threshold range
• Keep the threshold crossing trigger output unchanged (for backward compatibility)
• Separate blinking behavior from trigger output behavior

Implementation Steps

• Modify _handle_blink_effect to accept within_threshold parameter instead of trigger_active
• Update blinking to activate when entering threshold and continue while within range
• Update tests to reflect new blinking behavior
• Verify existing tests still pass
• Manual testing to confirm blinking works correctly

Testing

• Run existing tests to ensure no regression
• Update blinking tests to reflect new behavior
• Test with count at +100 to verify blinking occurs
• Code review and security scan

Original prompt

dans le node objectdetcount, l'affichage est a +100 en count, pourtant, pas de clignottement, verifie et fix

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