test:fortran7: default static so Intel/VS-based compilers pass

we did the same thing earlier with other Fortran tests for the same
reason.

test cases/fortran/7 generated/meson.build

@@ -1,15 +1,15 @@
 # Tests whether fortran sources files created during configuration are properly
 # scanned for dependency information
 
-project('generated', 'fortran')
+project('generated', 'fortran',
+  default_options : ['default_library=static'])
 
 conf_data = configuration_data()
 conf_data.set('ONE', 1)
 conf_data.set('TWO', 2)
 conf_data.set('THREE', 3)
 
-outfile = configure_file(
-      input : 'mod3.fpp', output : 'mod3.f90', configuration : conf_data)
+configure_file(input : 'mod3.fpp', output : 'mod3.f90', configuration : conf_data)
 # Manually build absolute path to source file to test
 # https://github.com/mesonbuild/meson/issues/7265
 three = library('mod3', meson.current_build_dir() / 'mod3.f90')