Since servers managed by Arcade use the `/worker` routes under the hood,
tools that use MCP-specific properties of `Context` will fail.
This PR helps reduce the 'blast radius' of the above fact. For
properties that were deemed 'non-critical' to the execution of a
deployed tool, we simply no-op. For properties that were deemed
'critical' to the execution of a deployed tool, we raise an error that
informs the caller that the feature is not supported for Arcade managed
servers.
- Non-critical property: A context property that returns None
- Critical property: A context property that may return something that
could be necessary for a tool execution to succeed.
c15c07e12f