Fixes #6107 and #6112: `yii message` was emptying existing translations and incorrectly writing not yet translated strings in .po in case of multiple categories

Update concept-behaviors.md

Minor syntax changes.

Update concept-events.md

Minor syntax changes.

[skip ci] Update concept-properties.md

[skip ci] Update concept-components.md

Minor syntax changes

Removed unnecessary comma.

[skip ci] Update runtime-logging.md

docs/guide/runtime-requests.md - typo fixed [ci skip]

docs/guide-ja/runtime-requests.md added [ci skip]

Minor syntax changes.

[ci skip] Update runtime-handling-errors.md

Minor syntax changes.

[skip ci] Update runtime-sessions-cookies.md

Added composer.lock

Minor syntax changes.

[skip ci] Update runtime-responses.md

Minor syntax changes.

Update runtime-requests.md

Minor syntax changes.

[skip ci] Update runtime-routing.md

Minor syntax changes.

[skip ci] Update runtime-bootstrapping.md

Minor syntax changes.

fix

fixes #5683

fixes #5899

close #6128