fix: screenshot overwritten, use size in filename

[sor4chi]

fixes: #298

Description

resolve user-defined custom presets is working not correct in plugin-screenshot.

Additional context

When the user does not set the preset

• When the user does not set the
• When one is set
• When multiple presets are set
  Check the behavior of them

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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