Module Not Found errors when upgrading from v3.2.5 to latest

I've been tasked with updating an old repo from HTLEngine v3.2.5 to latest (v6.4.22 at the time of writing this) as we have dependency vulnerabilities. A number of templates are using a module to inline SVGs into the output markup via `
${logo.svgItem @ context='unsafe'}

```

Existing Plugin Code where `modulePath` is set to `"./src/modules"` (working in v3.2.5):

```
const templateCompiler = new Compiler().withSourceMap(true).withRuntimeVar(Object.keys(templateData))
const templateRuntime = new Runtime().withUseDirectory(self.options.modulePath).setGlobal(templateData)
const templateTransformer = await templateCompiler.compileToFunction(templateSource)
const templateCode = await templateTransformer(templateRuntime)
```

Sample attempted fix using `createRequire()` and `withDirectory()`:

```
const modulePath = path.resolve(self.options.modulePath, 'sightly.SightlyStringUtils.js');
const templateCompiler = new Compiler().withDirectory('.').withSourceMap(true).withRuntimeVar(Object.keys(templateData));
const templateRuntime = new Runtime().setGlobal(templateData);
const templateTransformer = await templateCompiler.compileToFunction(templateSource, '.', createRequire(modulePath));
const templateCode = await templateTransformer(templateRuntime);
```

Sample attempted fix using `fsResourceLoader()` and `withResourceLoader()`:

```
const templateCompiler = new Compiler().withSourceMap(true).withRuntimeVar(Object.keys(templateData));
const templateRuntime = new Runtime().withResourceLoader(fsResourceLoader(self.options.modulePath)).setGlobal(templateData);
const templateTransformer = await templateCompiler.compileToFunction(templateSource, '.', require);
const templateCode = await templateTransformer(templateRuntime);
```

#### Logs taken while reproducing problem

Using existing code but removing `withUseDirectory()`:
```
Error: Cannot find module 'sightly.SightlyStringUtils'
Require stack:
- /Users/xxxx/Documents/projects/project-name/node_modules/@adobe/htlengine/src/compiler/Compiler.js
- /Users/xxxx/Documents/projects/project-name/node_modules/@adobe/htlengine/src/index.js
- /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js
- /Users/xxxx/Documents/projects/project-name/config/webpack.common.js
- /Users/xxxx/Documents/projects/project-name/config/webpack.dev.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/webpack-cli.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/bootstrap.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/bin/cli.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack/bin/webpack.js
at Module._resolveFilename (node:internal/modules/cjs/loader:1077:15)
at Module._load (node:internal/modules/cjs/loader:922:27)
at Module.require (node:internal/modules/cjs/loader:1143:19)
at require (node:internal/modules/cjs/helpers:121:18)
at main (eval at compileToFunction (/Users/xxxx/Documents/projects/project-name/node_modules/@adobe/htlengine/src/compiler/Compiler.js:279:22), :976:18)
at /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js:317:44
at async Promise.all (index 0)
at async /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js:188:11 {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/Users/xxxx/Documents/projects/project-name/node_modules/@adobe/htlengine/src/compiler/Compiler.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/@adobe/htlengine/src/index.js',
'/Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js',
'/Users/xxxx/Documents/projects/project-name/config/webpack.common.js',
'/Users/xxxx/Documents/projects/project-name/config/webpack.dev.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/webpack-cli.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/bootstrap.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/bin/cli.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack/bin/webpack.js'
]
}
```

When using `createRequire()`:

```
Error: Cannot find module 'sightly.SightlyStringUtils'
Require stack:
- /Users/xxxx/Documents/projects/project-name/src/modules/sightly.SightlyStringUtils.js
at Module._resolveFilename (node:internal/modules/cjs/loader:1077:15)
at Module._load (node:internal/modules/cjs/loader:922:27)
at Module.require (node:internal/modules/cjs/loader:1143:19)
at require (node:internal/modules/cjs/helpers:121:18)
at main (eval at compileToFunction (/Users/xxxx/Documents/projects/project-name/node_modules/@adobe/htlengine/src/compiler/Compiler.js:279:22), :976:18)
at /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js:312:44
at async Promise.all (index 0)
at async /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js:188:11 {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/Users/xxxx/Documents/projects/project-name/src/modules/sightly.SightlyStringUtils.js'
]
}
```

When using `fsResourceLoader()`:

```
Error: Cannot find module 'sightly.SightlyStringUtils'
Require stack:
- /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js
- /Users/xxxx/Documents/projects/project-name/config/webpack.common.js
- /Users/xxxx/Documents/projects/project-name/config/webpack.dev.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/webpack-cli.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/bootstrap.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/bin/cli.js
- /Users/xxxx/Documents/projects/project-name/node_modules/webpack/bin/webpack.js
at Module._resolveFilename (node:internal/modules/cjs/loader:1077:15)
at Module._load (node:internal/modules/cjs/loader:922:27)
at Module.require (node:internal/modules/cjs/loader:1143:19)
at require (node:internal/modules/cjs/helpers:121:18)
at main (eval at compileToFunction (/Users/xxxx/Documents/projects/project-name/node_modules/@adobe/htlengine/src/compiler/Compiler.js:279:22), :976:18)
at /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js:290:44
at async Promise.all (index 0)
at async /Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js:187:11 {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/Users/xxxx/Documents/projects/project-name/config/plugins/sightly-webpack-plugin/index.js',
'/Users/xxxx/Documents/projects/project-name/config/webpack.common.js',
'/Users/xxxx/Documents/projects/project-name/config/webpack.dev.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/webpack-cli.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/lib/bootstrap.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack-cli/bin/cli.js',
'/Users/xxxx/Documents/projects/project-name/node_modules/webpack/bin/webpack.js'
]
}
```