Rename Kotlin Gradle plugin catalog aliases per review

Use kotlin-gradlePlugin and kotlin-gradlePluginApi so the accessors
read libs.kotlin.gradlePlugin and libs.kotlin.gradlePluginApi and the
asProvider disambiguation is no longer needed.

gradle-plugin/build.gradle.kts

diff --git a/gradle-plugin/build.gradle.kts b/gradle-plugin/build.gradle.kts
index 78f85fe..3e617eb 100644
--- a/gradle-plugin/build.gradle.kts
+++ b/gradle-plugin/build.gradle.kts
@@ -16,8 +16,8 @@
 }
 
 dependencies {
-    compileOnly(libs.kotlin.gradle.plugin.api)
-    compileOnly(libs.kotlin.gradle.plugin.asProvider())
+    compileOnly(libs.kotlin.gradlePluginApi)
+    compileOnly(libs.kotlin.gradlePlugin)
     compileOnly(libs.kotlin.compiler.embeddable)
     // replace AGP dependency w/ gradle-api when we have source registering API available.
     compileOnly(libs.agp)

gradle/libs.versions.toml

diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 8d9d7ae..383321f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -8,8 +8,8 @@
 
 [libraries]
 kotlin-stdlib = { module = "org.jetbrains.kotlin:kotlin-stdlib", version.ref = "kotlin-base" }
-kotlin-gradle-plugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin-base" }
-kotlin-gradle-plugin-api = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin-api", version.ref = "kotlin-base" }
+kotlin-gradlePlugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin-base" }
+kotlin-gradlePluginApi = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin-api", version.ref = "kotlin-base" }
 kotlin-compiler-embeddable = { module = "org.jetbrains.kotlin:kotlin-compiler-embeddable", version.ref = "kotlin-base" }
 kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinx-serialization" }
 kotlinx-coroutines-core-jvm = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core-jvm", version.ref = "aa-coroutines" }