JPS: exclude source roots from other targets

Previously `findJavaRootDescriptor` was return source root for random
module. This cause build errors for mpp (same file may appear in
multiple source roots of common and platform modules)

#KT-28988 Fixed

jps-plugin/testData/incremental/multiModule/multiplatform/custom/complementaryFiles/_dependencies.txt

@@ -0,0 +1,4 @@
+c [sourceSetHolder]
+
+pJvm [compilationAndSourceSetHolder, jvm]
+pJvm -> c [include]

jps-plugin/testData/incremental/multiModule/multiplatform/custom/complementaryFiles/build.log

@@ -0,0 +1,14 @@
+================ Step #1 =================
+
+Building c
+Building pJvm
+Cleaning output files:
+  out/production/pJvm/FJvmKt.class
+  out/production/pJvm/META-INF/pJvm.kotlin_module
+End of files
+Compiling files:
+  c/src/f.kt
+  pJvm/src/fJvm.kt
+End of files
+Exit code: OK
+------------------------------------------

jps-plugin/testData/incremental/multiModule/multiplatform/custom/complementaryFiles/c_f.kt

@@ -0,0 +1,9 @@
+expect fun f()
+
+@ExperimentalMultiplatform
+@OptionalExpectation
+internal expect annotation class SharedImmutable()
+
+@ExperimentalMultiplatform
+@SharedImmutable
+val UNDEFINED = 1

jps-plugin/testData/incremental/multiModule/multiplatform/custom/complementaryFiles/pJvm_fJvm.kt

@@ -0,0 +1,3 @@
+actual fun f() = Unit
+
+fun x() = 1

jps-plugin/testData/incremental/multiModule/multiplatform/custom/complementaryFiles/pJvm_fJvm.kt.new.1

@@ -0,0 +1,3 @@
+actual fun f() = Unit
+
+fun x() = 2