Regression bridge entangled to itself

[koculu]

Fixes component-prop retargeting regressions introduced in single-prop bridge syncing.

What changed

• Prevented bridge self-sync teardown in single-prop:
  • early return when forwarded bridge source equals current prop target (ctxKey === value).
• This preserves the real source↔bridge entangle after prop shadowing in component context.

Why

• After selectedHost replacement, first r-for mutation in component-prop path could target stale tenants (or throw in app builds) because source↔bridge link was unintentionally cleared.

Tests

• Added regression coverage in tests/directives/r-for.spec.ts for:
  • switching selectedHost via component prop
  • first tenant add after switch should use new host list
• Revalidated existing r-model retargeting coverage in tests/directives/model.spec.ts.