`future` unable to export libraries of list encapsulated functions

**Describe the bug**

If a function is wrapped in a list then `future` seems to be unable to detect the libraries used by that function:

```
library(lubridate)
library(future)
my_a_fun <- function(x) {
zz <- days(3)
x
}
callme <- function(fun) {
obj <- list(funny = fun)
wrapper <- function(x) {
obj$funny(x)
}
future::future(wrapper(1))
}

plan(multisession, workers = 2)
value(callme(my_a_fun))

Error in days(3) : could not find function "days"
```

**Expected behavior**

That it would be able to recognise that the lubridate library is required

**Session information**

Please share your session information *after* the error has occurred so that we also see which packages and versions are involved;

```r
> sessionInfo()
R version 4.4.1 (2024-06-14)
Platform: x86_64-apple-darwin23.4.0
Running under: macOS Sonoma 14.6.1

Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /usr/local/Cellar/r/4.4.1/lib/R/lib/libRlapack.dylib; LAPACK version 3.12.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: Europe/London
tzcode source: internal

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] lubridate_1.9.3 future_1.34.0

loaded via a namespace (and not attached):
[1] compiler_4.4.1 parallelly_1.38.0 generics_0.1.3 parallel_4.4.1 tools_4.4.1 rstudioapi_0.16.0 listenv_0.9.1 codetools_0.2-20
[9] digest_0.6.37 globals_0.16.3 timechange_0.3.0

> future::futureSessionInfo()
*** Package versions
future 1.34.0, parallelly 1.38.0, parallel 4.4.1, globals 0.16.3, listenv 0.9.1

*** Allocations
availableCores():
system
12
availableWorkers():
$system
[1] "localhost" "localhost" "localhost" "localhost" "localhost" "localhost" "localhost" "localhost" "localhost" "localhost" "localhost" "localhost"

*** Settings
- future.plan=
- future.fork.multithreading.enable=
- future.globals.maxSize=
- future.globals.onReference=
- future.resolve.recursive=
- future.rng.onMisuse=
- future.wait.timeout=
- future.wait.interval=
- future.wait.alpha=
- future.startup.script=

*** Backends
Number of workers: 2
List of future strategies:
1. multisession:
- args: function (..., workers = 2, envir = parent.frame())
- tweaked: TRUE
- call: plan(multisession, workers = 2)

*** Basic tests
Main R session details:
pid r sysname release version nodename machine
1 65511 4.4.1 Darwin 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:13:00 PDT 2024; root:xnu-10063.141.2~1/RELEASE_X86_64 host001 x86_64
login user effective_user
1 user001 user001 user001
Worker R session details:
worker pid r sysname release version nodename
1 1 65631 4.4.1 Darwin 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:13:00 PDT 2024; root:xnu-10063.141.2~1/RELEASE_X86_64 host001
2 2 65632 4.4.1 Darwin 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:13:00 PDT 2024; root:xnu-10063.141.2~1/RELEASE_X86_64 host001
machine login user effective_user
1 x86_64 user001 user001 user001
2 x86_64 user001 user001 user001
Number of unique worker PIDs: 2 (as expected)
```