feat: adds support for svelte 5 (#963)

## Description

- updates the svelte _compile_ call to include an empty object as a 2nd
parameter.
This is required for svelte 5 and svelte 4 seems to ignore it so it
seems we're in luck and don't need funky branching.
- Adjusts the supported compiler range for svelte
- Adjusts the  integration & unit tests to expect svelte 5 output

## Motivation and Context

Svelte 5 seems to have become stable and in their release notes they
encourage users to upgrade.

Also fixes #962 

## How Has This Been Tested?


- [x] green ci
- [x] adjusted  automated non-regression  tests

## Types of changes


- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] Documentation only change
- [ ] Refactor (non-breaking change which fixes an issue without
changing functionality)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)

package.json

@@ -258,7 +258,7 @@
     "npm-run-all": "4.1.5",
     "prettier": "3.3.3",
     "proxyquire": "2.1.3",
-    "svelte": "^4.2.19",
+    "svelte": "5.1.9",
     "symlink-dir": "6.0.2",
     "typescript": "5.6.3",
     "upem": "9.0.4",
@@ -287,11 +287,6 @@
         "package": "rechoir",
         "policy": "wanted",
         "because": "we want to keep rechoir ~similar to what webpack-cli uses (which is ^0.8.0 since 2022-11-15). See https://github.com/webpack/webpack-cli/blame/master/packages/webpack-cli/package.json"
-      },
-      {
-        "package": "svelte",
-        "policy": "wanted",
-        "because": "upgrading to supporting svelte 5 will require a non-trivial amount of labour (which we are going to invest, but not right now)"
       }
     ]
   },
@@ -303,7 +298,7 @@
     "coffee-script": ">=1.0.0 <2.0.0",
     "coffeescript": ">=1.0.0 <3.0.0",
     "livescript": ">=1.0.0 <2.0.0",
-    "svelte": ">=3.0.0 <5.0.0",
+    "svelte": ">=3.0.0 <6.0.0",
     "swc": ">=1.0.0 <2.0.0",
     "typescript": ">=2.0.0 <6.0.0",
     "vue-template-compiler": ">=2.0.0 <3.0.0",

src/extract/transpile/svelte-wrap.mjs

@@ -14,7 +14,11 @@ function getTranspiler(pTranspilerWrapper) {
       pTranspilerWrapper,
       pTranspilerOptions,
     );
-    return compile(lPreProcessedSource).js.code;
+    // in svelte 5 one must provide the second argument
+    // lest it throws because it's accessing a property
+    // in it. In svelte 4 (which also takes compiler
+    // options there) this isn't necessary.
+    return compile(lPreProcessedSource, {}).js.code;
   };
 }