Add failing test FindLiterals on Groovy code

[pstreef]

Recipe name: Find literals

Recipe id: org.openrewrite.java.search.FindLiterals

Error:

:

Message:

begin 1, end 0, length 1

Detail:

java.lang.StringIndexOutOfBoundsException: begin 1, end 0, length 1
java.base/java.lang.String.checkBoundsBeginEnd(String.java:4606)
java.base/java.lang.String.substring(String.java:2709)
org.openrewrite.java.search.FindLiterals$1.visitLiteral(FindLiterals.java:70)
org.openrewrite.java.search.FindLiterals$1.visitLiteral(FindLiterals.java:65)
org.openrewrite.java.search.FindLiterals_1_GroovyVisitor.visitLiteral(FindLiterals_1_GroovyVisitor.zig:81)
org.openrewrite.java.tree.J$Literal.acceptJava(J.java:3466)
org.openrewrite.java.tree.J.accept(J.java:58)
org.openrewrite.TreeVisitor.visit(TreeVisitor.java:250)
org.openrewrite.groovy.GroovyVisitor.lambda$visitGString$1(GroovyVisitor.java:64)
org.openrewrite.internal.ListUtils.map(ListUtils.java:244)
org.openrewrite.internal.ListUtils.map(ListUtils.java:267)
org.openrewrite.groovy.GroovyVisitor.visitGString(GroovyVisitor.java:64)
org.openrewrite.groovy.tree.G$GString.acceptGroovy(G.java:694)
org.openrewrite.groovy.tree.G.accept(G.java:47)
org.openrewrite.TreeVisitor.visit(TreeVisitor.java:250)
org.openrewrite.TreeVisitor.visitAndCast(TreeVisitor.java:320)
...

[github-actions]

Suggested change

	groovy("""
	groovy(
	"""

[knutwannheden]

This commit does not specifically address this issue, but it might fix it as a side effect: 6cc119a