Fix ocp-indent tests escaping sandbox (#1219)

ocp-indent was escaping from the `_build` directory to find the `.ocp-indent` file at the root of the source tree.
This didn't work because this file is not included in the release (as in #1217)

The test is completely reindented because it now uses the default config.

Author: Julow

test/passing/.ocp-indent

@@ -1376,7 +1376,7 @@
 
 (rule
  (targets js_source.ml.ocp.output)
- (deps .ocamlformat )
+ (deps .ocp-indent )
  (action
    (with-outputs-to %{targets}
      (system "%{bin:ocp-indent} %{dep:js_source.ml.ref}"))))

test/passing/dune.inc

@@ -82,7 +82,7 @@ let emit_test test_name setup =
       {|
 (rule
  (targets %s.ocp.output)
- (deps .ocamlformat %s)
+ (deps .ocp-indent %s)
  (action
    (with-outputs-to %%{targets}
      (system "%s%%{bin:ocp-indent} %%{dep:%s}"))))