FIR: fix libs filtering for abs/rel paths combinations

Some of the incoming paths "absoluteness" may not match the
one of the corresponding library path, and that leaded to incorrect
filtering out some items in the deserialized symbol providers.
Fix the filtering to account for the mismatch.
#KT-57535 fixed

compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractFirDeserializedSymbolProvider.kt

@@ -57,7 +57,15 @@ abstract class LibraryPathFilter {
 
         override fun accepts(path: Path?): Boolean {
             if (path == null) return false
-            return libs.any { path.startsWith(it) }
+            val isPathAbsolute = path.isAbsolute
+            val absolutePath by lazy(LazyThreadSafetyMode.NONE) { path.toAbsolutePath() }
+            return libs.any {
+                when {
+                    it.isAbsolute && !isPathAbsolute -> absolutePath.startsWith(it)
+                    !it.isAbsolute && isPathAbsolute -> path.startsWith(it.toAbsolutePath())
+                    else -> path.startsWith(it)
+                }
+            }
         }
     }
 }

compiler/tests/org/jetbrains/kotlin/cli/LauncherScriptTest.kt

@@ -21,6 +21,7 @@ import com.intellij.openapi.util.text.StringUtil
 import org.jetbrains.kotlin.cli.common.CompilerSystemProperties
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
+import org.jetbrains.kotlin.test.CompilerTestUtil
 import org.jetbrains.kotlin.test.KotlinTestUtils
 import org.jetbrains.kotlin.test.TestCaseWithTmpdir
 import org.jetbrains.kotlin.test.util.KtTestUtil
@@ -507,4 +508,21 @@ println(42)
             expectedStderr = ""
         )
     }
+
+    fun testK2ClassPathWithRelativeDir() {
+        val file1kt = tmpdir.resolve("file1.kt").apply {
+            writeText("class C")
+        }
+        CompilerTestUtil.executeCompilerAssertSuccessful(K2JVMCompiler(), listOf("-d", tmpdir.absolutePath, "-language-version", "2.0", file1kt.absolutePath))
+        val file2kt = tmpdir.resolve("file1.kt").apply {
+            writeText("val c = C()")
+        }
+        runProcess(
+            "kotlinc",
+            "-cp", ".", "-d", ".", "-language-version", "2.0", file2kt.absolutePath,
+            workDirectory = tmpdir,
+            expectedStdout = "",
+            expectedStderr = "warning: language version 2.0 is experimental, there are no backwards compatibility guarantees for new language and library features\n"
+        )
+    }
 }