CAMEL-23315: camel-exec - Add option to turn on|off control headers f…

[davsclaus]

…or camel-exec to make it more restricted by default.

Description

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[github-actions]

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[github-actions]

🧪 CI tested the following changed modules:

• catalog/camel-catalog
• components/camel-exec
• docs
• dsl/camel-componentdsl
• dsl/camel-endpointdsl

All tested modules (10 modules)

• Camel :: Catalog :: Camel Catalog
• Camel :: Component DSL
• Camel :: Endpoint DSL
• Camel :: Exec
• Camel :: JBang :: MCP
• Camel :: JBang :: Plugin :: Route Parser
• Camel :: JBang :: Plugin :: Validate
• Camel :: Launcher :: Container
• Camel :: YAML DSL :: Validator
• Camel :: YAML DSL :: Validator Maven Plugin

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