Add interface_checks to allowed keywords

This PR adds the `interface_checks` keyword argument to the list of allowed keywords for `solve` and `init`, as documented in SciMLBase.jl PR #561.

Previously, using `interface_checks = false` would throw an unrecognized keyword error. Now it's properly recognized as a valid keyword argument.

Fixes #980

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ChrisRackauckas

src/solve.jl

@@ -101,7 +101,9 @@ const allowedkeywords = (:dense,
     # For AbstractAliasSpecifier
     :alias,
     # Parameter estimation with BVP
-    :fit_parameters)
+    :fit_parameters,
+    # Interface checks control
+    :interface_checks)
 
 const KWARGWARN_MESSAGE = """
                           Unrecognized keyword arguments found.