quarkus-resteasy-reactive PathMatcher allows any extra character in the end of valid path

[DmitriyO]

Describe the bug

when using quarkus-resteasy-reactive, appending any extra character in the end of a valid path doesn't result in 404 but instead gets to the existing valid route
making simple @Path("hello") resource, will return a response when calling /hello, but also /helloX (X = any character) and /helloX/, while the invalid paths should result in 404
appending more than 1 character results in a valid behaviour and returns 404
seems that the PathMatcher treats the last character as if it was a trailing slash since in some places in the code only the length of the remaining path part is checked (I suppose for performance reasons?)

quarkus-resteasy PathMatcher does behave as expected

Expected behavior

/hello should return a response
/helloX and /helloX/ should return 404 (X == any character)

Actual behavior

/hello should return a response
/helloX and /helloX/ return same response as /hello

How to Reproduce?

create a starter quarkus project with quarkus-resteasy-reactive extension
add a simple hello resource

(kotlin version)

@Path("hello")
class HelloResource {
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    fun hello() : String {
        return "Hello"
    }
}

Output of uname -a or ver

Darwin MacBook-Pro.local 20.6.0 Darwin Kernel Version 20.6.0; root:xnu-7195.141.8~1/RELEASE_X86_64 x86_64

Output of java -version

openjdk version "16.0.2" 2021-07-20; OpenJDK Runtime Environment Corretto-16.0.2.7.1 (build 16.0.2+7)

GraalVM version (if different from Java)

Quarkus version or git rev

2.6.3.Final

Build tool (ie. output of mvnw --version or gradlew --version)

Gradle 6.9

Additional information

No response

[quarkus-bot]

/cc @FroMage, @evanchooly, @geoand, @stuartwdouglas