Config.toml allows integer for decimal but runtime throws `ClassCastException`

[Nuvindu]

Description

When using WSO2 Integrator, Config.toml allows assigning an integer(5) value to a configurable variable defined as decimal. However, at runtime this results in a ClassCastException indicating a mismatch. If the value is set as a decimal value (5.0), it works as expected.

Exception in thread "main" java.lang.ClassCastException: class java.lang.Long cannot be cast to class java.lang.Double (java.lang.Long and java.lang.Double are in module java.base of loader 'bootstrap')
        at io.ballerina.runtime.internal.configurable.providers.toml.TomlProvider.getAsDecimalAndMark(TomlProvider.java:221)
        at io.ballerina.runtime.internal.configurable.ConfigResolver.lambda$getValueFunction$5(ConfigResolver.java:114)
        at io.ballerina.runtime.internal.configurable.ConfigResolver.getConfigValue(ConfigResolver.java:156)
        at io.ballerina.runtime.internal.configurable.ConfigResolver.getConfigValue(ConfigResolver.java:96)
        at io.ballerina.runtime.internal.configurable.ConfigResolver.resolveConfigs(ConfigResolver.java:83)
        at io.ballerina.runtime.internal.launch.LaunchUtils.initConfigurableVariables(LaunchUtils.java:124)
        at nuvindu.file_int_with_copilot.0.$_init.main(file_int_with_copilot)

Steps to Reproduce

1. Create an integration using WSO2 Integrator.
2. Define a configurable variable of type decimal.
3. In Config.toml, assign an integer value. (myDecimalVar = 5)
4. Run the integration.

Version

5.0.0-alpha13

Environment Details (with versions)

No response