arrow

GH-33849: [C++] Fix builds with ARROW_BUILD_SHARED=OFF and ARROW_BUILD_EXAMPLES=ON (#34350)



### Rationale for this change

Building with `ARROW_BUILD_SHARED=OFF` and `ARROW_BUILD_EXAMPLES=ON` causes an error.

### What changes are included in this PR?

At `examples/arrow/CMakeLists.txt`, set `arrow_substrait_[shared|static]` and `gandiva_[shared|static]` appropriately according to `ARROW_BUILD_SHARED`.

### Are these changes tested?

In `--preset ninja-debug-maximal`, `ARROW_BUILD_EXAMPLES=ON`.

```
$ cmake .. --preset ninja-debug-maximal -DARROW_BUILD_SHARED=OFF -DARROW_BUILD_STATIC=ON
$ cmake --build .
```

Build was completed.

```
$ cmake .. --preset ninja-debug-maximal -DARROW_BUILD_SHARED=ON -DARROW_BUILD_STATIC=ON
$ cmake --build .
```

Build was completed.

### Are there any user-facing changes?

* Closes: #33849

Authored-by: abetomo <abe@enzou.tokyo>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>