Tentative fix for inline tests in bytecode mode

Author: dariusf

Diff for: src/dune_rules/inline_tests.ml

@@ -167,7 +167,7 @@ include Sub_system.Register_end_point (struct
           match mode with
           | Native -> Exe.Linkage.native
           | Best -> Exe.Linkage.native_or_custom (Super_context.context sctx)
-          | Byte -> Exe.Linkage.byte
+          | Byte -> Exe.Linkage.custom (Super_context.context sctx)
           | Javascript -> Exe.Linkage.js)
     in
     let* () =
@@ -212,7 +212,7 @@ include Sub_system.Register_end_point (struct
           match mode with
           | Native | Best -> ".exe"
           | Javascript -> ".bc.js"
-          | Byte -> ".bc"
+          | Byte -> ".exe"
         in
         let custom_runner =
           match mode with

Diff for: test/blackbox-tests/test-cases/inline_tests-byte.t

@@ -26,10 +26,4 @@ Reproduction case for #5515
   > EOF
 
   $ dune test
-  File "dune", line 4, characters 1-28:
-  4 |  (inline_tests (modes byte))
-       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-  You are doing something unexpected with the tests. No tests have 
-  been run. You should use the inline_tests_runner script to run 
-  tests.
-  [1]
+  byte